A thought that can and/or has been tested multiple times to prove it's true or false. And is used by others if prove true.
The wave period is the amount of time it takes a wave to
pass a point. Wave frequency is what you
call the number of waves that pass in a certain point per second. If you
increase the wave length of any wave, you decrease the wave frequency (the
number of waves that pass in a certain point per second).
Answer:
The ocular micrometer has no units. Revolving Nose Piece - Several objective lenses of varying magnification and numerical aperture are mounted on the revolving nosepiece. The nosepiece must click into place for the objective lens to be in proper alignment.
Many scientists agree that the universe is about 13 billion years old.
Birds live virtually everywhere on Earth because they have evolved endothermy, the ability to use their metabolism to maintain a constant body temperature.
Birds belong to the class aves; they have an extremely efficient, one way breathing system with additional air sacs. Flying birds have strong, hollow bones and powerful flight muscles. Most birds can fly, they have a strong heart and an efficient way of breathing; which are necessary for birds to fly.
