Contact

Contact b) Why are astronomers using radio telescopes face for far stars instead of a telescope? First of all, what is a radio telescope? The first non-visual spectral region that was utilise extensively for astronomical observations was the radio frequency band. Telescopes observing at these wavelengths are commonly called radio telescopes. Radio telescopes may be made much larger than optical/infrared telescopes because the wavelengths of radio waves are much longer than wavelengths of optical light.

A reign of thumb is that the reflecting surface must not have irregularities larger than about 1/5 the wavelength of light that is being focused. By that criterion a radio telescope is several cardinal thousand times easier to figure than an optical telescope of the akin size In the movie "Contact," astronomer Ellie Arroway, played by actress Jodie Foster, searches for signs of extraterrestrial life using massive, Earth-bound radio telescopes. Much of Contacts scie...If you penury to get a full essay, order it on our website: Ordercustompaper.com

If you want to get a full essay, wisit our page: write my paper