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ADDING COMPUTER TO WIRELESS NETWORK
petak, 11.11.2011.
YBA 10 BLUETOOTH WIRELESS AUDIO RECEIVER. YBA 10 BLUETO
YBA 10 BLUETOOTH WIRELESS AUDIO RECEIVER. WIRELESS NETWORK CANNOT CONNECT. XBOX 360 WIRELESS CONTROLLER PROBLEMS.
Yba 10 Bluetooth Wireless Audio Receiver
- A radio receiver is an electronic circuit that receives its input from an antenna, uses electronic filters to separate a wanted radio signal from all other signals picked up by this antenna, amplifies it to a level suitable for further processing, and finally converts through demodulation and
- Bluetooth is an open wireless technology standard for exchanging data over short distances (using short wavelength radio transmissions) from fixed and mobile devices, creating personal area networks (PANs) with high levels of security.
- A standard for the short-range wireless interconnection of cellular phones, computers, and other electronic devices
- An industrial specification for wireless personal area networks
- A short-range radio build into smartphones that lets you connect headsets, speakerphones or even computers to your smartphone.
- having no wires; "a wireless security system"
- radio: medium for communication
- transmission by radio waves
- Lacking or not requiring wires
- [[Image:Hirst-Shark.jpg|thumb|300px|The Physical Impossibility of Death in the Mind of Someone Living by Damien Hirst (1991). The iconic work of British art in the 1990s,Brooks, Richard. , The Sunday Times, 16 January 2005. Retrieved 14 October 2008. and the symbol of Britart worldwide.
- ten: being one more than nine
- ten: the cardinal number that is the sum of nine and one; the base of the decimal system
- A gramophone record, commonly known as a phonograph record (in American English), vinyl record (when made of polyvinyl chloride), or simply record, is an analog sound storage medium consisting of a flat disc with an inscribed, modulated spiral groove.
Sansui 7070 Stereo Receiver
1975
A bigger stereo receiver of Sansui's 4 digit series with powerful 60 watt per channel.
-
Ein grosserer Sansui Receiver aus der 4-Digit Serie. Mitte bis Ende der 70er wurde der kraftige Receiver verkauft.
the inner workings of the audio laser
inside the audio laser orb you can see the laser, the battery pack, the audio output transformer, the two-lead bicolor led (not visible) and the audio wire that plugs into an ipod.
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WIRELESS SIGNAL PROBLEMS - SIGNAL PROBLEMS
WIRELESS SIGNAL PROBLEMS - MICROSOFT WIRELESS LASER MOUSE 5000 DRIVER.
Wireless Signal Problems
- (Wireless Signals) Wireless communication is the transfer of information over a distance without the use of enhanced electrical conductors or "wires".
- A matter or situation regarded as unwelcome or harmful and needing to be dealt with and overcome
- An inquiry starting from given conditions to investigate or demonstrate a fact, result, or law
- A thing that is difficult to achieve or accomplish
- (problem) trouble: a source of difficulty; "one trouble after another delayed the job"; "what's the problem?"
- (problem) a question raised for consideration or solution; "our homework consisted of ten problems to solve"
- (problem) a state of difficulty that needs to be resolved; "she and her husband are having problems"; "it is always a job to contact him"; "urban problems such as traffic congestion and smog"
Hector Munro MacDonald
Hector was the older of two sons and, as a young child, he lived in Edinburgh. However, not long after he began his schooling in the Scottish capital, the family moved to a farm near Fearn, in Easter Ross. Fearn is north of the Cromarty Firth which runs along the northern side of the Black Isle. Hector attended the local school before attending the Royal Academy in Tain. He completed his school education at the Old Aberdeen Grammar School before entering Aberdeen University in 1882.
After studying mathematics at Aberdeen University, he graduated with First Class Honours in 1886 and won a Fullerton Scholarship. As many Scottish mathematicians of this era, Macdonald proceeded to Cambridge to take the Mathematical Tripos after completing his first degree in Scotland. Entering Clare College, Cambridge, as a foundation scholar, he graduated as fourth Wrangler in the Mathematical Tripos of 1889 (meaning that he was ranked fourth among those obtaining a First Class degree), was awarded a fellowship at Clare in the following year and, in 1891, was awarded the second Smith's Prize.
Macdonald began his research career at Cambridge working on topics in pure mathematics. Edmund Whittaker describes this work as being on:-
... the relations between convergent series and asymptotic expansions, the zeros and the addition theorem of the Bessel functions, various Bessel integrals, spherical harmonics and Fourier series.
His research changed direction, however, when in 1899 Cambridge University announced that the topic for the 1901 Adams Prize would be:-
The improvement of existing knowledge in respect of ... the modes and periods of free electric vibrations in systems of charged bodies, and the radiation from them ... [and] the theory of wireless telegraphy.
Macdonald submitted an essay Electric waves which won the 1901 Adams Prize and was published in the following year. We will give some details below concerning the main question and theory produced by Macdonald concerning wireless signals, but for the moment we continue to describe his career. He was elected to the Royal Society in 1901, then left Cambridge in 1904 after he was appointed professor of mathematics at Aberdeen University.
In 1907 Macdonald was appointed to the Court of Aberdeen University and he remained on this administrative body for the rest of his life. Whittaker describes his major contributions:-
Brought up on a farm, and with the further experience of estate management gained as acting senior bursar of Clare, he naturally took up specially the oversight of the university lands and buildings; his conception of a cite universitaire for the neighbourhood of King's College has left a permanent impression on that region.
His manner of conducting himself on this body is described in [1]:-
He spoke little, and when he spoke he was always brief, but what he said was usually decisive and always undeviatingly to the point.
Macdonald held his fellowship at Clare College until 1908 but in 1914 he was awarded an honorary fellowship of his former College. He was awarded the Royal Society's Royal Medal in 1916 and, during 1916-18 served as president of the London Mathematical Society. During World War I, Macdonald did war service in London attached to the Ministry of Munitions where he dealt with wages.
Macdonald worked on electric waves and solved difficult problems regarding diffraction of these waves by summing series of Bessel functions. He corrected his 1903 solution to the problem of a perfectly conducting sphere embedded in an infinite homogeneous dielectric in 1904 after a subtle error was pointed out by Poincare. The major problem which he tackled was that of wireless waves. About the time that Macdonald published his prize winning essay on electric wave, Guglielmo Marconi was successful in the transmission of the first wireless signals across the Atlantic. However, this posed a major problem, since according to the theory as then developed this should have been impossible. Why is this?
The problem was simple. Light and wireless waves are both electric waves of different wavelengths, but both have a wavelength which is very small compared with the radius of the Earth. Light does not bend round the Earth, yet wireless waves do as is proved by transmitting them across the Atlantic. What mechanism can explain this? The answer that Macdonald came up with is that the explanation is due to refraction. This is partially true but not completely so as experimental evidence showed since wireless waves bent round the Earth more than could be explained by refraction alone. The answer, we now understand, is due to reflection of waves of particular wavelengths by the upper atmosphere but Macdonald's theory was an important step towards such an understanding.
c-loot01
My boyfriend knew of my poor signal problems for my computer's wireless, and with the help of an Electical Engineer friend of his, built a directional antenna for it. In their tests, I think they were about to go about 300ft with it across their parking lot. I still get a low signal, but it used to be a very low signal and dropping alot.
Apparently it's a large juice can who's length to diameter ratio is good for making a standing wave of the wireless signal. It catches it and bounces back, hitting at a certain peak area where a wire is inside of the can.... I think...
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ADDING COMPUTER TO WIRELESS NETWORK - ADDING COMPUTER T
ADDING COMPUTER TO WIRELESS NETWORK - LINKSYS WRT610N DUAL BAND WIRELESS N GIGABIT ROUTER.
Adding Computer To Wireless Network
- Wireless network refers to any type of computer network that is wireless, and is commonly associated with a telecommunications network whose interconnections between nodes are implemented without the use of wires.
- (Wireless networking) For a modest investment, you can set up Internet access in your home or office, and broadcast it to computers in other parts of the building without running wires.
- (Wireless Networks) Connection of modules together to transmit information without the use of physical connection by wires.
- a machine for performing calculations automatically
- calculator: an expert at calculation (or at operating calculating machines)
- (computing) computer science: the branch of engineering science that studies (with the aid of computers) computable processes and structures
- An electronic device for storing and processing data, typically in binary form, according to instructions given to it in a variable program
- A person who makes calculations, esp. with a calculating machine
- (add) make an addition (to); join or combine or unite with others; increase the quality, quantity, size or scope of; "We added two students to that dorm room"; "She added a personal note to her letter"; "Add insult to injury"; "Add some extra plates to the dinner table"
- Increase in amount, number, or degree
- Put or mix (an ingredient) together with another as one of the stages in the preparation of a dish
- (add) attention deficit disorder: a condition (mostly in boys) characterized by behavioral and learning disorders
- Join (something) to something else so as to increase the size, number, or amount
- (add) state or say further; "`It doesn't matter,' he supplied"
Why Windows Computers Are So Bad
The Intel driver that ships with the Dell is even worse. My coworker's network connection is hosed by this network with no SSID broadcasting. It is hosed because any time it detects a new wireless network, the Intel driver wants you to select the network you want to use--it won't just use the perfectly good one it has been using. As a result, I have been adding all of these other networks to an "exclusion list." You can see the red locks by their names in the picture. However, you can't add a network with no SSID to the exclusion list. And you can't join it. But it is there, so it is a Catch-22 for the dumb Intel driver. No network for you!
Small victory
I'm chipping away at getting all my supplies organized, tonight I got a whole bunch of my fabric put away. I am resolved that my stash will not overflow this cabinet from here on out - I'm going to have to get rid of a bunch of stuff I have in storage.
I love this picture because it shows what nerdy nerds we are - the computer hooked to the television with wireless mouse and keyboard, the stereo receiver which has speaker wires running to different rooms around the house, the DVD player which is also hooked into the receiver to use as a CD player, and of course the Wii!
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EVOLUENT WIRELESS VERTICAL ERGONOMIC MOUSE : VERTICAL E
Evoluent Wireless Vertical Ergonomic Mouse : Wireless Adapter Pci Card : The Best Wireless Phone Service
Evoluent Wireless Vertical Ergonomic Mouse
- Ergonomics is the science of designing jobs, equipment and workplaces to fit workers. Proper ergonomic design is necessary to prevent repetitive strain injuries, which can develop over time and can lead to long-term disability.
- (esp. of workplace design) Intended to provide optimum comfort and to avoid stress or injury
- (ergonomics) biotechnology: the branch of engineering science in which biological science is used to study the relation between workers and their environments
- of or relating to ergonomics
- Lacking or not requiring wires
- transmission by radio waves
- radio: medium for communication
- having no wires; "a wireless security system"
- A vertical line or plane
- The distance between the highest and lowest points of a ski area
- An upright structure
- at right angles to the plane of the horizon or a base line; "a vertical camera angle"; "the monument consists of two vertical pillars supporting a horizontal slab"; "measure the perpendicular height"
- relating to or involving all stages of a business from production to distribution
- something that is oriented vertically
- any of numerous small rodents typically resembling diminutive rats having pointed snouts and small ears on elongated bodies with slender usually hairless tails
- manipulate the mouse of a computer
- Use a mouse to move a cursor on a computer screen
- sneak: to go stealthily or furtively; "..stead of sneaking around spying on the neighbor's house"
- Prowl around as if searching
- (of a cat or an owl) Hunt for or catch mice
Digital Ergonomics (graphic)
Digital Ergonomics takes into account several factors related to People, Technology and User Experience:
* People:
- Skills
- Context
- Goals
* Technology:
- Standards
- Compatibility
- Usability
- Accessibility
- Visibility
- Security
* User Experience:
- Browsing
- Interaction
- Access
Ergonomics For Therapists
RM 735 E73 2007
Ergonomics for Therapists, 3rd Edition is a comprehensive introduction to ergonomics in the workplace. Thoroughly revised with the latest ergonomic techniques and strategies, this reader-friendly resource gives you the foundation you need to help clients maximize efficiency and prevent workplace injuries before they occur.
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G OR N WIRELESS. G OR
G or n wireless. Ps3 wireless keypad price
G Or N Wireless
- radio: medium for communication
- Lacking or not requiring wires
- having no wires; "a wireless security system"
- transmission by radio waves
G di Grazie.
Inizio la G di oggi con una lunga lista di "Grazie", quelli che vengono detti troppo poco.
I grazie per una cosa stupida, per una cosa importante, per un sorriso, per un abbraccio.
Sentirsi dire "Grazie di esistere" puo illuminare qualsiasi giornata.
Quest' oggi dico grazie specialmente alla persona nella foto, perche senza di lui a volte mi sarei persa.
Per gli anni passati assieme a scuola, a far sembrare quelle giornate un po meno buie e noiose.
Grazie per essere come sei, per non essere un ipocrita come molti altri, per non saper mai dire la cosa giusta nel momento giusto, ma azzeccarci comunque sempre e strapparmi un sorriso.
Grazie per gli abbracci.
Grazie per i discorsi senza capo ne coda, ma sicuramente piu seri e importanti di quelli che fanno nella politica della nostra patria.
Grazie per le giornate e pomeriggi passati insieme, a volte semplicissimi, ma non tolgono nulla ad ogni attimo.
Grazie per starmi ancora ad ascoltare, e a sopportare le mille foto che ti faccio,
grazie perche chi trova te come amico, ottiene davvero un tesoro.
La gente ipocrita e stupida si sta perdendo una cosa che manco immagina, ma a me non importa di quella gente, perche io son cosi fortunata di conoscerti e di averti come amico, e sai cosa darei per te.
Grazie anche ai nuovi amici che ho conosciuto, o sto conoscendo.
Grazie a quelli che avevo gia, che mi sostengono sempre.
Grazie a quelli che vedo poco, ma in un modo o nell'altro prima o poi li rinicontro sempre.
La G di Giustizia, che c'e troppo poco nel mondo.
La G di Gioia, un sentimento effimero, ma bellissimo.
La G di Gentilezza, anche quella un po troppo rara nel mondo, e poco aprezzata.
La G di Gravita, certa gente non si rende conto di troppe cose, e il loro mondo ovattato potrebbe aver brutte conseguenze su di loro.
La G di Generosita, anche quella, rara!
Alla prossima ragazzi miei, per la H! (:O)
© All rights reserved
G
Some of the range of wooden type - The the 'G' section. The largest is 500mm.
So, can you name the different faces?
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LENOVO WIRELESS PROBLEM. WIRELESS PROBLEM
Lenovo Wireless Problem. A Wireless Print Server.
Lenovo Wireless Problem
- Lacking or not requiring wires
- radio: medium for communication
- transmission by radio waves
- having no wires; "a wireless security system"
- A thing that is difficult to achieve or accomplish
- An inquiry starting from given conditions to investigate or demonstrate a fact, result, or law
- A matter or situation regarded as unwelcome or harmful and needing to be dealt with and overcome
- trouble: a source of difficulty; "one trouble after another delayed the job"; "what's the problem?"
- a state of difficulty that needs to be resolved; "she and her husband are having problems"; "it is always a job to contact him"; "urban problems such as traffic congestion and smog"
- a question raised for consideration or solution; "our homework consisted of ten problems to solve"
- Lenovo Group Limited (, ) is a Chinese-based multinational computer technology corporation that develops, manufactures and markets desktops and notebook personal computers, workstations, servers, storage drives, IT management software, and related services.
Lenovo s10 Keyboard Comparison
Lenovo s10 keyboard, compared to one of the new aluminum Apple keyboards. You can also see the trackpad in this shot.
Lenovo H320
Lenovo H320
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PRINTER WIRELESS NETWORKING - PRINTER WIRELESS
PRINTER WIRELESS NETWORKING - PCI CARD WIRELESS G
Printer Wireless Networking
- (Wireless Network) A method of connecting a computer to other computers or to the Internet without linking them by cables.
- (Wireless Network) A form of network used to connect computers and computer hardware together without cables. Also see WI-FI.
- Wireless network refers to any type of computer network that is wireless, and is commonly associated with a telecommunications network whose interconnections between nodes are implemented without the use of wires.
- A person whose job or business is commercial printing
- a machine that prints
- A machine for printing text or pictures onto paper, esp. one linked to a computer
- someone whose occupation is printing
- (computer science) an output device that prints the results of data processing
Wifi Printer
Print wireless through a network.
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NETGEAR WIRELESS SECURITY : WIRELESS SECURITY
NETGEAR WIRELESS SECURITY : NO WIRELESS CONNECTION ON LAPTOP : SENNHEISER RS120 RS 120 900MHZ WIRELESS HEADPHONES.
Netgear Wireless Security
- Wireless security is the prevention of unauthorized access or damage to computers using wireless networks.
- NETGEAR, founded in 1996, is a US manufacturer of computer networking equipment and other computer hardware.
- Enable additional NetGear logic (helps with NetGear based LAN configurations)
January 18, 2008
Low voltage "Hub" room.
This is the hub for all network connections, Netgear 24 port switch, Phone connections and Vonage Router, Wireless Router, Remote Network Drive, Cable Modem, Direct TV / Cable Array , TLM Security System all on a UPS battery backup complete with light and smoke detector.
NETGEAR DG834G Mbps Wireless ADSL2+ Modem Router
Double firewall security
4 port 10/100 Mbps switch
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WIRELESS 8 PORT ROUTER : PORT ROUTER
Wireless 8 Port Router : How To Enable Wireless Lan.
Wireless 8 Port Router
- having no wires; "a wireless security system"
- transmission by radio waves
- Lacking or not requiring wires
- radio: medium for communication
- A power tool with a shaped cutter, used in carpentry for making grooves for joints, decorative moldings, etc
- (computer science) a device that forwards data packets between computer networks
- a worker who routes shipments for distribution and delivery
- a power tool with a shaped cutter; used in carpentry for cutting grooves
- An opening for the passage of steam, liquid, or gas
- An aperture or opening, in particular
- A socket in a computer or network into which a device can be plugged
- put or turn on the left side, of a ship; "port the helm"
- a place (seaport or airport) where people and merchandise can enter or leave a country
- sweet dark-red dessert wine originally from Portugal
- eight: the cardinal number that is the sum of seven and one
- eight: being one more than seven
- Bookbinding is the process of physically assembling a book from a number of folded or unfolded sheets of paper or other material. It usually involves attaching covers to the resulting text-block.
Noc'd Up
started wiring up my house, moved cable modem/router/gigabit switch to basement with server & UPS (and weather station base). next up: keep stringing cat6 to every other room in the house!
Server Farm
Here at Opscode Austin, we've got a bit of a private cloud in the works. These are my test machines for deploying OpenStack and other applications with Chef.
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PSP WIRELESS HOTSPOT - PSP WIRELESS
Psp Wireless Hotspot - Atheros Wireless Lan Driver For Windows Xp - Linksys Wireless G Router Password.
Psp Wireless Hotspot
- A hotspot is a site that offers Internet access over a wireless local area network through the use of a router connected to a link to an Internet service provider. Hotspots typically use Wi-Fi technology for the wireless network.
- A region covered by wireless access points. If you are in one of these areas with a wirelessly enabled computer, you can connect to the Internet without needing a Modem or cables.
- Paint Shop Pro (PSP) is a raster graphics editor and, later in the series, a vector graphics editor for computers running the Microsoft Windows operating system that was originally published by Minneapolis-based Jasc Software.
- (PSPS) The Home Ownership Scheme (HOS; ) is a subsidized-sale public housing programme managed by the Hong Kong Housing Authority in Hong Kong.
- The PSP is an Eppley radiometer that measures solar radiation from 0.285 to 2.8µm. This type of instrument is also called a pyranometer. Case temperature is not needed in this instrument’s calculations. Units are Watts/m**2.
two wireless laptops
the Calef Library in Washington Vermont got their first wireless router today.
hotspot
tm net hotspot wireless antenna (maybe)
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WIRELESS NETWORK OUTDOOR CAMERA : OUTDOOR CAMERA
Wireless network outdoor camera : How to connect 2 wireless routers : Wireless surround system reviews
Wireless Network Outdoor Camera
- Wireless network refers to any type of computer network that is wireless, and is commonly associated with a telecommunications network whose interconnections between nodes are implemented without the use of wires.
- (Wireless networking) For a modest investment, you can set up Internet access in your home or office, and broadcast it to computers in other parts of the building without running wires.
- (Wireless Networks) Connection of modules together to transmit information without the use of physical connection by wires.
- (Outdoor cameras) These cameras have hardened, waterproof outer bodies.
Outdoor Test [scanner camera]
Done with my self made scanner camera.
As you can see, there are a lot of things to work on: the colors are very strange and the focus is not good at all.
This was done in six separate scans: two different positions of the ccd with three colors each one, so everything that was not pefectly still appears shifted from the color channel, and if the light is not stable through all the scans, the result is the strange color shades in the photo.
It took about 10 minutes to do all the scans and adjustment and about an hour of postprocessing.
For the next photo I will try the small lens (35mm format)
Vintage camera
This was my mother in laws Dad's camera I believe. :) What fun this shoot what!
Anji from MM
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WIRELESS LIGHT FIXTURES : LIGHT FIXTURES
Wireless light fixtures : Belkin wireless pda keyboard.
Wireless Light Fixtures
- (Light fixture) A light fixture or light fitting is an electrical device used to create artificial light and/or illumination.
- (Light Fixture) a complete lighting unit consisting of a lamp (light bulb) or lamps, a housing, and a connection to the source of electrical power.
- Light fixtures are the mechanisms that hold or contain the light bulbs or lamps. They usually have horizontal and vertical ledges that can collect dirt and dust.
- having no wires; "a wireless security system"
- Lacking or not requiring wires
- transmission by radio waves
- radio: medium for communication
Mac Pro Desk Setup Nov '10
My Temporary Mac Pro Setup until i finish building my integrated LED lighting fixtures.
From Left to Right
- 8-core 2.26 Ghz Intel Xeon Mac Pro, 16GB ram, hard drives: 1x640GB, 2x2TB, 1x1TB external
- Wireless Logitech diNovo Keyboard Mac Edition
- Apple Magic Trackpad
- Dell 30inch Monitor (3008WFP)
- Wacom Tablet
- 16GB iPad
- 16GB iPhone 4
- 2GB iPod Shuffle
ETC Express 12/24
Accidentally pressed the button, but the shot turned out cool. This is the small board- this one only controls the fiber optic curtain and some LED fixtures on the trees on either side of the house. We are using Wireless DMX attached to it, and you can see the antenna sticking up in the background.
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WIRELESS SIGNAL PROBLEMS - SIGNAL PROBLEMS
WIRELESS SIGNAL PROBLEMS - MICROSOFT WIRELESS LASER MOUSE 5000 DRIVER.
Wireless Signal Problems
- (Wireless Signals) Wireless communication is the transfer of information over a distance without the use of enhanced electrical conductors or "wires".
- A matter or situation regarded as unwelcome or harmful and needing to be dealt with and overcome
- An inquiry starting from given conditions to investigate or demonstrate a fact, result, or law
- A thing that is difficult to achieve or accomplish
- (problem) trouble: a source of difficulty; "one trouble after another delayed the job"; "what's the problem?"
- (problem) a question raised for consideration or solution; "our homework consisted of ten problems to solve"
- (problem) a state of difficulty that needs to be resolved; "she and her husband are having problems"; "it is always a job to contact him"; "urban problems such as traffic congestion and smog"
Hector Munro MacDonald
Hector was the older of two sons and, as a young child, he lived in Edinburgh. However, not long after he began his schooling in the Scottish capital, the family moved to a farm near Fearn, in Easter Ross. Fearn is north of the Cromarty Firth which runs along the northern side of the Black Isle. Hector attended the local school before attending the Royal Academy in Tain. He completed his school education at the Old Aberdeen Grammar School before entering Aberdeen University in 1882.
After studying mathematics at Aberdeen University, he graduated with First Class Honours in 1886 and won a Fullerton Scholarship. As many Scottish mathematicians of this era, Macdonald proceeded to Cambridge to take the Mathematical Tripos after completing his first degree in Scotland. Entering Clare College, Cambridge, as a foundation scholar, he graduated as fourth Wrangler in the Mathematical Tripos of 1889 (meaning that he was ranked fourth among those obtaining a First Class degree), was awarded a fellowship at Clare in the following year and, in 1891, was awarded the second Smith's Prize.
Macdonald began his research career at Cambridge working on topics in pure mathematics. Edmund Whittaker describes this work as being on:-
... the relations between convergent series and asymptotic expansions, the zeros and the addition theorem of the Bessel functions, various Bessel integrals, spherical harmonics and Fourier series.
His research changed direction, however, when in 1899 Cambridge University announced that the topic for the 1901 Adams Prize would be:-
The improvement of existing knowledge in respect of ... the modes and periods of free electric vibrations in systems of charged bodies, and the radiation from them ... [and] the theory of wireless telegraphy.
Macdonald submitted an essay Electric waves which won the 1901 Adams Prize and was published in the following year. We will give some details below concerning the main question and theory produced by Macdonald concerning wireless signals, but for the moment we continue to describe his career. He was elected to the Royal Society in 1901, then left Cambridge in 1904 after he was appointed professor of mathematics at Aberdeen University.
In 1907 Macdonald was appointed to the Court of Aberdeen University and he remained on this administrative body for the rest of his life. Whittaker describes his major contributions:-
Brought up on a farm, and with the further experience of estate management gained as acting senior bursar of Clare, he naturally took up specially the oversight of the university lands and buildings; his conception of a cite universitaire for the neighbourhood of King's College has left a permanent impression on that region.
His manner of conducting himself on this body is described in [1]:-
He spoke little, and when he spoke he was always brief, but what he said was usually decisive and always undeviatingly to the point.
Macdonald held his fellowship at Clare College until 1908 but in 1914 he was awarded an honorary fellowship of his former College. He was awarded the Royal Society's Royal Medal in 1916 and, during 1916-18 served as president of the London Mathematical Society. During World War I, Macdonald did war service in London attached to the Ministry of Munitions where he dealt with wages.
Macdonald worked on electric waves and solved difficult problems regarding diffraction of these waves by summing series of Bessel functions. He corrected his 1903 solution to the problem of a perfectly conducting sphere embedded in an infinite homogeneous dielectric in 1904 after a subtle error was pointed out by Poincare. The major problem which he tackled was that of wireless waves. About the time that Macdonald published his prize winning essay on electric wave, Guglielmo Marconi was successful in the transmission of the first wireless signals across the Atlantic. However, this posed a major problem, since according to the theory as then developed this should have been impossible. Why is this?
The problem was simple. Light and wireless waves are both electric waves of different wavelengths, but both have a wavelength which is very small compared with the radius of the Earth. Light does not bend round the Earth, yet wireless waves do as is proved by transmitting them across the Atlantic. What mechanism can explain this? The answer that Macdonald came up with is that the explanation is due to refraction. This is partially true but not completely so as experimental evidence showed since wireless waves bent round the Earth more than could be explained by refraction alone. The answer, we now understand, is due to reflection of waves of particular wavelengths by the upper atmosphere but Macdonald's theory was an important step towards such an understanding.
c-loot01
My boyfriend knew of my poor signal problems for my computer's wireless, and with the help of an Electical Engineer friend of his, built a directional antenna for it. In their tests, I think they were about to go about 300ft with it across their parking lot. I still get a low signal, but it used to be a very low signal and dropping alot.
Apparently it's a large juice can who's length to diameter ratio is good for making a standing wave of the wireless signal. It catches it and bounces back, hitting at a certain peak area where a wire is inside of the can.... I think...
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