https://padlet.com/3103978/radiowaves Monique' Gregory 5th Even en-us 2017-04-24 18:45:06 UTC 2026-01-04 13:54:20 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Thunder.png 3103978 https://padlet.com/3103978/radiowaves/wish/167940154 Radio Waves are the basic building blocks of radio communications. Like pond waves, a radio wave is a series of peaks and valleys. The pattern of a wave before it repeats itself is called a cycle, and the number of cycles per second is called frequency, which is measured in the unit hertz (Hz). The range of the radio spectrum is considered to be from 3 kilohertz (KHz) up to 300 gigahertz (GHz). ]]> 2017-04-24 18:48:02 UTC https://padlet.com/3103978/radiowaves/wish/167940154 3103978 https://padlet.com/3103978/radiowaves/wish/167940380 Radio waves have the longest wave length on the EM spectrum. These waves can be as long as a football field or as short as a football.]]> 2017-04-24 18:48:35 UTC https://padlet.com/3103978/radiowaves/wish/167940380 3103978 https://padlet.com/3103978/radiowaves/wish/167941204 Planets, comets, stars, galaxies, and other objects in space emit light at various wavelengths. Some of the light they emit have vary large wavelengths, some are even a mile long. Those wavelengths are considered to be radio waves also. Since 1932, astronomers have delevloped sophisticated systems that help them to make pictures from the wavelengths emitted from the astronomical objects. By studying the radio waves emitted from planets, comets, stars, and other like objects, astronomers can learn more about their composition, structure, and motion. ]]> 2017-04-24 18:50:51 UTC https://padlet.com/3103978/radiowaves/wish/167941204 3103978 https://padlet.com/3103978/radiowaves/wish/167941426 These waves do more than just bring music to your radio. They can also send and receive signals from your cellphone and television. The antenae on the television receive the signal that is brodcasted from the televidion station, and then it is displayed on the television screen. Cable companies also have antenae or dishes that can receive waves brodcasted from local TV stations. The signal is then sent through a cable to your house to be displayed on the TV. ]]> 2017-04-24 18:51:30 UTC https://padlet.com/3103978/radiowaves/wish/167941426 3103978 https://padlet.com/3103978/radiowaves/wish/167941616 It is believed that large doses or radio waves and cause cancer, leukaemia, and other disorders, but they are also extremely helpful and important to our everyday life. ]]> 2017-04-24 18:52:08 UTC https://padlet.com/3103978/radiowaves/wish/167941616 3103978 https://padlet.com/3103978/radiowaves/wish/167969367 2017-04-24 20:53:48 UTC https://padlet.com/3103978/radiowaves/wish/167969367 3103978 https://padlet.com/3103978/radiowaves/wish/167969772 2017-04-24 20:57:07 UTC https://padlet.com/3103978/radiowaves/wish/167969772 3103978 https://padlet.com/3103978/radiowaves/wish/168209161 2017-04-25 18:52:32 UTC https://padlet.com/3103978/radiowaves/wish/168209161 3103978 https://padlet.com/3103978/radiowaves/wish/168356702 2017-04-26 13:13:39 UTC https://padlet.com/3103978/radiowaves/wish/168356702 3103978 https://padlet.com/3103978/radiowaves/wish/168356780 2017-04-26 13:13:53 UTC https://padlet.com/3103978/radiowaves/wish/168356780 3103978 https://padlet.com/3103978/radiowaves/wish/168453421 2017-04-26 17:39:30 UTC https://padlet.com/3103978/radiowaves/wish/168453421 3103978 https://padlet.com/3103978/radiowaves/wish/168456663 2017-04-26 17:49:42 UTC https://padlet.com/3103978/radiowaves/wish/168456663