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Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

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Vaccines prevent between 2.5 and 4 million deaths every year.

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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

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The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.

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The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.

Negative feedback control of a regulated variable. Negative feedback control of a regulated variable.
A “reduced power” warning light indicates a fault with the electronic throttle control system on ... A “reduced power” warning light indicates a fault with the electronic throttle control system on ...
A typical evaporative emission control system. Note that when the computer turns on the canister ... A typical evaporative emission control system. Note that when the computer turns on the canister ...
U.S. Subsurface Coal Mining: Output, Price, and Output per Worker-Hour, 1949–1994 U.S. Subsurface Coal Mining: Output, Price, and Output per Worker-Hour, 1949–1994
The profit, p(t), made at a fair depends on the price of the ticket, t. The profit is modelled ... The profit, p(t), made at a fair depends on the price of the ticket, t. The profit is modelled ...
A car wash reduced the price of a basic wash as a promotion and test of the market. With the ... A car wash reduced the price of a basic wash as a promotion and test of the market. With the ...
Video: What is Reverse Osmosis?

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