If it is noon on a clear spring day, which of the
following can we say
with certainty after Earth
makes one hall of a full
rotation?
A. It will be autumn.
orse, A
B. It will be noon again in the same location,
C. It will be midnight
D. It will be a completely new year

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.

the aurora is formed when charged particles emitted from the sun during a solar flare penetrate the earth's magnetic shield and collide with atoms and molecules in our atmosphere. these collisions result in countless little bursts of light, called photons, which make up the aurora.

auroras are generated by charged solar particles hitting molecules in earth's atmosphere. this usually happens in high latitudes, because our planet’s magnetic field tends to funnel these particles toward the poles. that’s why it can be experienced in northern ohio.

drying towels at the beach