You stand on a straight desert road at night and observe a vehicle approaching. this vehicle is equipped with two small headlights that are 0.641 m apart. at what distance, in kilometers, are you marginally able to discern that there are two headlights rather than a single light source? take the wavelength of the light to be 549 nm and your pupil diameter to be 4.89 mm.

Explanation:

x' = 2 * 1.22 * lambda * ( f / D )

lambda = wavelength of light in mm

f = focal length in mm

D = aperture diameter in mm

sinβ=light separation/ distance eye

distance eye=light /sinβ

explanation:

earth's surface is mainly heated by the absorption of infrared radiation from the sun.

evaporation occurs because molecules in liquid water are warmed ( usually by the sun) and vibrate quicker, becoming less dense and rise.

condensation occurs because molecules in water vapor are cooled and therefore vibrate more slowly thus becoming more dense and eventually fall to earth.

lines of equal barometric pressure on a weather map are called: isobars : lines of equal temp on a weather map are called: isotherms.​