Free Science Videos and Lectures

First waves in a large free sphere of water in weightlessness are examined.

A large free sphere of water 130mm in diameter. A puff of air is put radially directed from side and we look at the...

This science video contains:
experiment, zero g, 0g, weightlessness, water, sphere, surface waves, body waves, water droplets, elastic collisions, effervescent antacid tablet, chemical reaction

Sodium is a chemical element which has the symbol Na (Latin: natrium), atomic number 11, atomic mass 22.9898 g/mol, oxidation number +1.

Sodium is a soft, silvery white, highly reactive element...

This science video contains:
explosion, water, burning, reaction, fire, alkali, sodium, na

Potassium is a chemical element. It has the symbol K (Latin: kalium) and atomic number 19.
The name "potassium" comes from the word "potash", as potassium was first isolated from potash.
...

This science video contains:
water, sparks, reaction, fire, potassium, alkali

The ice bomb illustrates the fact that the volume of ice is greater than the volume of an equal mass of liquid water.

Some cold water is poured into a cast iron bomb and a threaded plug is screwed...

This science video contains:
explosion, water, iron bomb, ice, iron, plug, dry ice, aceton, freeze, pressure

Watch what happens when a mixture of water and cornstrach is shaken at various speeds and frequencies.

The ease with which it can be stirred and drips from the stir indicates it behaves very much...

This science video contains:
texas, fingers, holes, cornstrach, water, shaking, frequency, acceleration, liquid, faraday waves, surface, austin