![]() 1,035,596,959 visitors served. |
|
![]() Dictionary/ thesaurus | ![]() Medical dictionary | ![]() Legal dictionary | ![]() Financial dictionary | ![]() Acronyms | ![]() Idioms | ![]() Encyclopedia | ![]() Wikipedia encyclopedia | ? |
radio wave |
Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson | 0.04 sec. |
radio waveWave from the portion of the electromagnetic spectrum at lower frequencies than microwaves. The wavelengths of radio waves range from thousands of metres to around 30 cm. These correspond to frequencies as low as 3 Hz and as high as 1 gigahertz (109 Hz). Radio-wave communications signals travel through the air in a straight line, reflect off of clouds or layers of the ionosphere, or are relayed by satellites in space. They are used in standard broadcast radio and television, short-wave radio, navigation and air-traffic control, cellular telephony, and even remote-controlled toys. See RF. |
|
? Mentioned in | ? References in periodicals archive | ||
|---|---|---|---|
| This will enable multi-position detection, identification and location of radio radiation sources. I found that, indeedf, as you go further away from the Earth, the amount of radio radiation for a given amont of infrared radiation falls," Lerner says. The surrounding outer cloud, however, absorbs the light and reemits the energy as infrared and radio radiation. |
| Free Tools: |
For surfers:
Browser extension |
Word of the Day |
Help
For webmasters: Free content | Linking | Lookup box | Double-click lookup | Partner with us |
|
|---|