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These are the remotes with numbers one through nine on them; these use a high frequency sound to change the channel, this sound cannot be heard by humans but can be heard by dogs.
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Allows for communication over far distances. Unlike regular telephones, the mobile phone is hand held and can be used on the go. Not only can you talk to people, but you can also text and e-mail. There are many new versions of the mobile phone.
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The invention of nuclear power is so important because it has given modern day science the most sustainable energy that has been discovered yet.
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The Microwave oven is used to heat things up in a short amount of time.
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These devices are essentially really small circuits built on silicon chips, made up of many different transistors, resistors and capacitors (basically parts of a circuit).
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It began to be used for social networking and games for entertainment. It is now one of the most used services known to man and over one fourth of the world’s population is known to use it.
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8-track tapes are named so because they can hold up to 8 normal-length songs on the amount of tape inside them.
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In the 1980’s many people began to own laptops and laptops started to have flip screens.
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Despite great hardship caused by limited power, loss of cabin heat, shortage of potable water and the critical need to jury-rig the carbon dioxide removal system, the crew returned safely to Earth on April 17.
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MRI stands for magnetic resonance imaging. The MRI is a medical imaging technique that shows an image of the body’s internal structure.
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The cell phone made it possible for people to go about their daily lives without having to worry about being home (or office etc) to take/ make a call.
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GPS stands for Global Positioning System. It helps you find your way around town/ the world easily.
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DNA Fingerprinting has now become an essential part of solving crimes and proving if someone is innocent or guilty.
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Hybrid cars run longer on a single tank of gas than normal cars because of their part-electric engine.
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Now people can have thousands of songs in one small device, which can be carried in their pockets at all times.
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he IPod has gone through many incarnations over the years, and has split into four current variants, the shuffle, the nano, the classic, and the touch.
