Using the Method of Comparing Times to Get a Handle

question 17

Essay

Using the method of comparing times to get a handle on the large distances in astronomy, compare the size of Earth to the size of the visible universe. Start by making the size of the Earth comparable to a snap of your fingers, which lasts about 1/7 seconds. Show your computation.

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Definitions:

MIL L 2105D

This refers to a military specification for lubricants, oils, and greases used in mechanical systems.

API GL-5

A classification for gear lubricants defined by the American Petroleum Institute, indicating suitability for high-speed, shock-load, and high-torque applications.

API GL-3

Designates a classification of gear lubricants by the American Petroleum Institute for moderate conditions, often used in non-hypoid axles and transmissions not subject to extreme pressures.

Heavy Truck Differential Carriers

Components designed to house the differential assembly in heavy trucks, aiding in the distribution of engine power to the wheels, allowing for different rotations.