How did Percy Spencer invent the microwave?
When he was testing radio transmission using microwaves, he observed that one of his chickens was cooked to perfection. He realised that this was a very energy efficient way of heating things so he thought that he would put it to good use.
Who was the first person to the invent the light bulb?
The 1st electric lamp was built by Humphry Davy (an Englishman) in 1809. Thomas Alva Edison improved the invention and based his improvements on a patent he purchased from inventors Henry Woodward & Matthew Evans who patented their electric lamp bulb in 1875.
Sir Joseph Wilson Swan produced an early electric lamp (1860), and in 1880, independently of Thomas Alva Edison, he produced a carbon-filament incandescent electric lamp.
Thomas Alva Edison (February 11, 1847 - October 18, 1931) was an American inventor, scientist and businessman who developed many devices that greatly influenced life around the world, including the phonograph, the motion picture camera, and a long-lasting, practical electric lamp.
Can you use a TracFone sim card in a boost phone?
No you cannot. AT&T uses a GSM network and Boost uses iDEN and the two are not even remotely compatible. The Boost SIM card can be used for international roaming but it will not work with GSM networks in the US. It will not work either way, a Boost SIM will not work in a GSM device and a GSM SIM will not work in a Boost device.
How do you convince your parents to get a 3ds?
Tell her playing an instrument is good for you, because it actually is! It teaches discipline, is a hobby (helps you not get bored and do other things which are inappropriate it's fun. I'm pretty sure you get U-Cast points (I think they help you get into universities) for doing grades. Tell her that. Don't forget you will look cool! Many more reasons for playing an instrument by simply doing a quick search on Google or something.
How much does a DVD player cost?
A DVD home theater will greatly enhance your enjoyment of movies at home. I've seen prices ranging from about $60 to more than $3000, so examine the features carefully to get what's right to fit your needs.
What sort of instrument or tool does a conducter use to guide an orchestra?
A conductor leads the orchestra with a baton.
How do you mystery gift shaymin?
Its impossible now as the date is gone to download it, but if you still want to know, you have to go to mystery gifts and download by wi-fi then you get a special item at the shop from a man in a green suit. Then you have to use it and then you have the chance to catch shaymin, and if you want to and have the right item then give it to shaymin to make it turn into shaymin sky.
What is the purpose of a variable resistor?
A variable resistor is used in cicuits to vary the magnitude of resistance passing through the resistor. It is commonly used to change the value of current across a circuit to find relationships of current and voltage.
In a rechargeable battery system what is the discharging reaction?
Discharge cycle is the rate at which a battery i used to do work it changes with the load. Charging cycle is the time required for the same battery to reach a point whereas is ready to do work again, BOTH RATES ARE SET BY THE BATTERY MANUFACTURE FOR OPTIMUM LIFE EXPECTANCY.
What inventions were made in 1860?
1. The steel plow 2. combine machine 3.telegraph 4.photography 5. mechanical reaper
Some things that were invented in the 1800s were the battery, tin cans, steam locomotives, and the camera. Other things invented were miner's lamp, stethoscope, and the sewing machine.
steam engines, sewing machines, the telephone, lightbulbs and busses
Battery, "Modern matches", toy baloon, etc.
1. The steel plow
2. Combine machine
3.telegraph
4.photography
5. Mechanical reape
1. The steel plow
2. Combine machine
3.telegraph
4.photography
5. Mechanical reape
Telephone
Kodak camera
the bell phone
people!
Things.....
The phonograph, various Thomas Edison inventions, interchangeable parts, and other invention from the Industrian Revolution
What are the disadvantages of microchips?
First, although you hear the term a lot in movies and popular magazines, the term "microchip" is not used a lot by engineers and chip designers, who generally use the more accurate term "integrated circuit" or "IC" for short, or more informally, just "chip". The term "chip", without the micro, is derived from the stage of IC fabrication where the finished wafer is cut into tiny IC-sized pieces with a very fine diamond saw, producing "chips" of the wafer the way a beaver might turn a tree into chips by gnawing on it.
In general, there are a number of advantages of integrated circuits over constructing the same circuits out of individual ("discrete") components. Here are a few, although by no means all of them:
1: An IC is very much smaller than constructing the same circuit out of discrete parts.
2: ICs are less expensive, sometimes very much less expensive, than a discrete part solution
3: Because ICs are smaller and more densely packed, the lengths of the connections between the components is very much shorter. This allows the circuit to run faster, because you have reduced the signal propagation time and connection capacitance.
4: Since you don't have to drive a wire load between components, the transistors making up logic functions can be smaller and thus faster as well.
5: It's easier to heat sink the waste heat out of a single chip instead of millions of components, generally. Sometimes the heat dissipation of a single chip can present challenges, as with a modern microprocessor.
6: All the components on a chip tend to share similar characteristics. This means that the transistors, resistors and occasionally capacitors on the part are matched devices by the nature of the fabrication techniques. This can be nearly impossible to achieve with discrete devices.
7: Components on a single part in general track with temperature changes during operation, which can again be nearly impossible to do with discrete devices.
8: A chip is physically much less fragile than a large assembly.
There are any number of other advantages/disadvantages, but these are the ones that come immediately to mind.
A CB radio is a wireless transceiver that operates on the frequency band called Citizen Band, CB. This band has been reserved for the public. In some countries license is required and in some countries no license is required to operate CB radio. The maximum power limit is 5 Watts. There are 40 channels around 27 MHz in this band.
Where is Bose Canada located at?
Bose has a number of locations in Canada. For example, there is a store in Vancouver located at the Pacific Centre Mall, 701 West Georgia, Unit G-054.
What are top rated kitchen appliances?
How do you delete downloaded movies on vudu?
In order to delete downloaded movies on Vudu, you need to select manage download from the details page for the movie you want to delete. On the next page, there will be an option to delete the movie in the format you have it downloaded in. The movie will only be deleted from your hard drive and can be downloaded again at any time.
Can you use a 9V 300ma adapter to power a 6V 800ma device?
No, the mA rating of adapters is the maximum amount of load that can be drawn from the adapter. 1 amp is equal to 1000 mA. By replacing a 800 mA adapter instead of using a 1000 mA adapter is limiting the connected devices load by 200 mA. If the connected device draws 800 mA's or less then the adapter will work.
What is UP Counter in Digital Electronics?
An up counter is simply a digital counter which counts up at some predefined increment. A Binary Up Counter with 'n' stages can count up to 2n states.
If we are implementing Up Counter with flip flops, this 'n' stages becomes the number of flip flops. For example a 4 bit Up Counter can count from binary 0000 to 1111, i.e 24=16 states.
A detailed design and working animation of of Binary Up Counter is given in the related link section below
Can a transformer step up power?
It is a basic tenet of physics that, in a closed system, energy can neither be created nor destroyed. Energy can, however, be transformed. It follows from this that the power output from a system cannot exceed the power input. Therefore, in a transformer, the primary power and the secondary power are always equal (at least in theory). A transformer can step voltage up or step it down. Since power equals voltage multiplied by current then, if the transformer secondary voltage is stepped up, the current must be stepped down by the same factor (that is, if the voltage is stepped up by a factor of 4 then the current is stepped down by a factor of 4). Any increase in voltage in the secondary of a transformer will result in a corresponding inversely proportional decrease in secondary current. From a practical standpoint, secondary power is always somewhat less than primary power due to resistive losses in the transformer windings as well as eddy current and hysteresis losses (magnetic losses) in the transformer core. These losses produce heat which compounds the transformer inefficiency. The primary and secondary windings are made from copper and, like all metals, it has a positive temperature coefficient of resistance. This is a fancy way of saying that when the copper windings of a transformer get hotter their electrical resistance goes up which further increases the resistive losses in the transformer.
What is Cycle of data processing how does it work?
Data processing is a process in which raw data is converted in usable format or information
Data processing cycle - data is processed again and again to get desired or accurate results
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Have much memory does a DVD hold?
a standard DVD tends to have 4.7GB of memory and this a general rule across most brands but now its anywhere from 4.7GB(single layered) to 17GB if its double sided,double layer)
A sentence with phonograph in it?
The phonograph was used by many people as entertainment. It is now outdated but it has become part of historical importance. The phonograph was tried to be used for talking dolls but the dolls were a disaster.
A phonograph is the old name for what what commonly called a 'record' and more recently referred to as 'Vinyl.
The word 'phono graph' means literally 'sound writing' or writing with sound.
It can refer to the machine used to play the recordings, or the recordings themselves.
It is a disc or cylinder, which has an analogue sound wave impressed onto it, as a spiral groove. The sound can be replayed simply, by rotating the record and allowing a fine needle to rest in the groove.
The needle is attached to a diaphragm and a horn which amplifies the 'squiggles' as the needle is moved by the groove, the sound can then be heard.
The records have been made from various materials, such as wax, shellac, aluminum and vinyl plastic.
What are some of the innovations that wrist watch has undergone since its original invention?
date display
use of a quartz crystal to keep time
digital display
alarm
stopwatch
water resistance
self-winding
automatic daily time updates from an atomic clock
The phonograph was the first device for recording and replaying sound. It was invented and patented by Thomas Edison, a famous American inventor. The invention of the phonograph was the invention that made him famous. It uses a cylinder with tinfoil on it to record sound by indentations made by a pin. First thing recorded was "Mary had a Little Lamb".
What are some spells for Tinker Bell nintendon DS?
1390-5107-4096 Blue Dress
8469-7886-7938 blue tiara
097745843869 blue top
657248096680 blue skirt
139051074096 blue shoes
846978867938 blue tiara
Dewberry-0241-4491-0630
Magnolia-1697-4780-6430
Baden-1199-2780-8802
Qana- 5889-0402-1154
Fawn-9556-0047-1043
Luminara-8046-5868-5678
Irdessa-0724-0213-6136
Olwen-7629-0545-7105
Rosetta- 8610-2523-6122
Cera-1297-0195-5747
Silvermist-0513-4563-6800
Elwood-3527-5660-3684
Vidia-3294-3220-0349
Terence-8606-6039-6383
Queen Clarion-1486-4214-8147
Spring Mr.-2492-1155-4907
Summer Mr-2582-7972-6926
Autumn Mr-2294-0281-6332
Winter Mr-2618-8587-2083
Blair-6899-6003-4480
Augustus-5318-3479-7972
Mariana-5138-8216-9240
Chipper-7980-9298-9818
Nollie-5905-2346-9329
Idalia-2998-8832-2673
1697-4780-6430 Magnolia Spell
Tadahh.