Free Science Videos and Lectures

A metal crucible is filled with iron-oxide and aluminum. A small amount of potassium, sugar and chloride is placed on top of iron-oxide aluminum mixture. A few drops of concentrated sulphuric acide...

This science video contains:
iron, reaction, potassium, iron oxide, aluminum, chloride, sulphuric acid, exothermic, mixture, reduction

Dr. Quantum welcomes you to flat-land, the world of only two dimensions!

In this world there is only forwards, backwards and left and right. There is no up and no down!

In this world two...

This science video contains:
space, sphere, dr quantum, flat land, 2d, two dimensions, 3d, three dimensions, dimension, up, down, back, forward, creature, unknown, cube, tetrahedron, ellipse

Here is a demo of transparent cement. It's almost as tough as the usual one but it also lets through light.

It could be used for designing modern buildings or used in facilities which need some of...

This science video contains:
cement, transparent, demo

In this experiment we are going to react aluminium with liquid bromine to make aluminum-bromide.

First a layer of bromine is poured into the bottom of a beaker. Then some aluminium powder is...

This science video contains:
liquid, reaction, aluminum, exothermic, aluminium, bromine, bromide, powder, beaker, fume, coating

Neutron slams into the nucleus of a heavy element which causes a nuclear fission creating two ligher elements (fission products) and more free neutrons.

These free neutrons are absorbed by other...

This science video contains:
nucleus, nuclear fission, neutrons, fission products, chain reaction