telescopes

What is the equation that relates wavelength and frequency of light?

f = c/l, where c = 300,000 km/s.

What are photons?

Particles representing light, associated with the photoelectric effect, with energy E proportional to frequency f.

What is the Planck constant?

h = 6.626 x 10^-34 J*s.

What is the resolved power equation for telescopes?

amin = 1.22 (l/D), where amin is minimum angular distance, l is wavelength, and D is diameter.

What is chromatic aberration?

A phenomenon in refracting telescopes where different wavelengths are focused at different focal lengths.

What does the magnifying power of a telescope depend on?

The ratio of focal lengths of the primary mirror/lens (Fo) and the eyepiece (Fe): M = Fo/Fe.

What are the benefits of computer-controlled adaptive optics in telescopes?

They adjust the mirror surface dynamically to compensate for atmospheric distortions.

What is interferometry in astronomy?

Combining signals from multiple telescopes to simulate a single large telescope.

Where is the best location to place a telescope to avoid atmospheric turbulence?

On high mountain tops.

What type of radiation cannot be observed from the ground due to atmospheric absorption?

Ultraviolet and X-ray radiation.