Willem Hendrik Keesom

Table of Contents

Introduction References & Edit History Quick Facts & Related Topics

Videos

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Highway Night Traffic Portland, drive, driving, car, automobile.

What's the Difference Between Speed and Velocity?

Iceberg, Arctic (polar, environment, global warming)

Why Does Water Freeze from the Top Down?

Above the clouds 130 nautical miles below, astronaut Mark C. Lee floats freely without tethers as he tests the new Simplified Aid for Extravehicular Activity (EVA) Spacewalk Rescue (SAFER) system, Sept. 16, 1994. Space Shuttle Discovery, STS-64

Gravity: From Apples to the Universe

Discover

Lusitania sinking, illustration from The War of the Nations (New York), December 31, 1919. World War I, WWI. This image is one of three on the page. (See source file for the other two.)

7 of the World’s Deadliest Shipwrecks

Illustration for Demystified "How Dangerous is Quicksand"

How Deadly Is Quicksand?

Cheetah (Acinonyx jubatus) standing on rock, side view, Masai Mara National Reserve, Kenya

The Fastest Animals on Earth

Hemp (Cannabis sativa).

9 Mind-Altering Plants

Fish. Lionfish. Lion-fish. Turkey fish. Fire-fish. Red lionfish. Pterois volitans. Venomous fin spines. Coral reefs. Underwater. Ocean. Red lionfish swims by seaweed.

10 of the World’s Most Dangerous Fish

Two chicks near an egg with a white background (poultry, chick, chickens, birds).

What Do Eggs Have to Do with Easter?

Groups of depositors in front of the closed American Union Bank, New York City. April 26, 1932. Great Depression run on bank crowd

Causes of the Great Depression

Willem Hendrik Keesom: Media

Dutch physicist

Videos

helium

helium

The many uses for helium, but are we running out of it?

Video: © American Chemical Society (A Britannica Publishing Partner)

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