Astronomers observe the chromosphere of the sun with a filter that passes the red hydrogen spectral line of wavelength 656.3 nm, called the hα line. the filter consists of a transparent dielectric of thickness d held between two partially aluminized glass plates. the filter is held at a constant temperature. (a) find the minimum value of d that produces maximum transmission of perpendicular hα light if the dielectric has an index of refraction of 1.399. (assume that the glass's refractive index exceeds 1.399.) (b) if the temperature of the filter increases above the normal value, increases its thickness, what happens to the transmitted wavelength? (its index of refraction does not change significantly.) it increases. it decreases. it remains unchanged. (c) the dielectric will also pass what near-visible wavelength? one of the glass plates is colored red to absorb this light.

when cloud cover increases then the suns ray's which provides the earth with light and warmth gets covered due to the due to the suns ray's being blocked, the temperature in that region

therefore to conclude i would like to say that,

=more the cloud cover, the lesser the

happy to

pls mark as brainliest.

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia

total distance/total time

(85 + 82)/(5+3)

167/8

20 just over