Energy & Power

The Museum's collections on energy and power illuminate the role of fire, steam, wind, water, electricity, and the atom in the nation's history. The artifacts include wood-burning stoves, water turbines, and windmills, as well as steam, gas, and diesel engines. Oil-exploration and coal-mining equipment form part of these collections, along with a computer that controlled a power plant and even bubble chambers—a tool of physicists to study protons, electrons, and other charged particles.

A special strength of the collections lies in objects related to the history of electrical power, including generators, batteries, cables, transformers, and early photovoltaic cells. A group of Thomas Edison's earliest light bulbs are a precious treasure. Hundreds of other objects represent the innumerable uses of electricity, from streetlights and railway signals to microwave ovens and satellite equipment.

Replica "stopper lamp" made to the original 1893 specifications for the Century of Progress Exposition in Chicago.Currently not on view
Description (Brief)
Replica "stopper lamp" made to the original 1893 specifications for the Century of Progress Exposition in Chicago.
Location
Currently not on view
date made
ca 1934
maker
Westinghouse Lamp Company
ID Number
2002.0020.01
accession number
2002.0020
catalog number
2002.0020.01
The word laser stands for "light amplification by stimulated emission of radiation." A lasing material, a crystal for example, amplifies light energy fed into it from an external source such as a flash-lamp.
Description
The word laser stands for "light amplification by stimulated emission of radiation." A lasing material, a crystal for example, amplifies light energy fed into it from an external source such as a flash-lamp. Scientists and engineers refer to this as "pumping" the laser.
These objects are experimental discharge lamps used to pump a crystal of yttrium-aluminum-garnet that has been treated with neodymium. Dating from about 1967 these specialized discharge lamps are similar to high pressure sodium (HPS) lamps that are commonly used in street lights. They are unusual in that they are made with clear tubes of artificial sapphire. Corning Glass made the material, called "Corstar Sapphire," that was then used by Westinghouse to make lamps. The clear tube permitted more light to pass than the typical milky-white material used in ordinary HPS street lamps, increasing the energy fed into the laser crystal.
Location
Currently not on view
date made
ca 1967
maker
Westinghouse Lamp Company
ID Number
2001.0084.01
accession number
2001.0084
catalog number
2001.0084.01
patent number
3566177

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