A gyroscope (from Ancient Greek γῦρος gŷros, "round" and σκοπέω skopéō, "to look") is a device used for measuring or maintaining orientation and angular velocity. [1] [2] It is a spinning wheel or disc in which the axis of rotation (spin axis) is free to assume any orientation by itself.

Gravity Probe B was a relativity gyroscope experiment funded by NASA. Efforts were led by the Stanford University physics department with Lockheed Martin as the primary subcontractor. Mission scientists viewed it as the second relativity experiment in space, following the successful launch of Gravity Probe A (GP-A) in 1976.

The present plan is to use two gyroscope rotors spheres made of fused silica and two made of single crystal silicon. This paper will describe the manufacturing of such spheres and the related precision measurements.

To test Einstein's theory of general relativity, Gravity Probe B must measure two minuscule angles with spinning gyroscopes, floating in space. While the concept of Gravity Probe B is relatively simple, carrying out the experiment required some of the most accurate and sophisticated technology ever developed.

Order in the next 12 hours and upgrade to 2 Day Shipping at checkout. Twirl the Rainbow Gyroscope Sphere on any flat, hard surface to watch it make swirly patterns. 1.5" in diameter. Not specified. See product description.

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2021年2月24日 · Given that a sphere can be thought of as a stack of disks we can already infer that a spinning sphere will have a gyroscopic response. For a disk and a sphere with the same total mass the response of the sphere will be in comparison less forceful, but it will be there.

2007年10月31日 · A spinning gyroscope stores energy proportional to its moment of inertia and the square of its angular velocity ω. This can be thought of in analogy to the energy stored by any moving body. In a linear system, kinetic energy is mv 2 /2.