Category A
Not an empty void, but an invisible structure
What is space-time according to Einstein
According to Newton’s theory of gravity, all bodies possess this force of attraction
What is gravity
No force -not even gravity- can move faster than this
What is the speed of light
A spinning wheel (rotor) in a universal mounting (gimbal) that allows its axle to be pointed in any direction
What is a gyroscope
A double-walled vessel with a vacuum between the walls to reduce the transfer of heat, used for storing hot or cold liquid
What is Dewar
Any of a class of starlike celestial objects, apparently of great size and remoteness, often associated with a spectrum with a large red shift and intense radio emission.
What is Quasar
299 792 km/sec (185 871 miles/sec)
What is the speed limit for all matter and energy in the universe under Einstein's 1905 Special Theory of Relativity
A device that monitors the spin axis orientation of the supercooled, superconducting gyroscope's perfectly unmarked, spherical rotor - without exerting significant torque on the spinning rotor
What is SQUID (Superconducting QUantum Interference Device)
According to him, an object's position is simply described by three spatial coordinates.
Who is Newton
One of the predictions of Einstein’s general theory of relativity; local space-time is twisted by the rotation of the Earth.
What is frame-dragging effect
The tendency of a rotating object to remain in its plane of rotation
What is gyroscopic inertia (rigidity in space)
One of the predictions of Einstein’s theory; the presence of a mass in space, such as the Earth, will warp local space-time, creating a dip or curve in space-time.
What is geodetic effect