One experiment that informs us that gravity bends lightbeams is
A) the bending of starlight as it nears Earth.
B) experiments in which laser beams are shined onto the surface of the moon, and their bending is measured.
C) the observed bending of light from stars as the light passes the sun.
D) the observed bending of sunlight in Earth's gravitational field.
E) laboratory experiments in which laser beams pass by massive amounts of iron.
Question 2
In the general theory of relativity, we assume the observer to be
A) moving at a significant fraction of lightspeed.
B) moving with constant velocity.
C) moving slowly compared to lightspeed.
D) at rest.
E) None of the above.
Aerial and close-up views of a large biodiversity experiment in Cedar Creek, Minnesota. Each of the
Abiogenesis Experiment
To keep the foot under the center of gravity, the biped’s femur is angled from hip to knee. The quad
Mercury experiment
The Meselson–Weigle experiment
The Taylor–Woods–Hughes experiment