Free Science Videos and Lectures

Mars is the fourth planet from the Sun in the Solar System. The planet is named after Mars, the Roman god of war. It is also referred to as the "Red Planet" because of its reddish appearance as...

This science video contains:
mars, earth, planet, surface, map, red planet, rotation, seasons

Neutrophils are our body's first line of defense against bacterial infections.

These cells can recognize certain chemicals and move to the source of these "chemoattractants" by migrating up the...

This science video contains:
cell, neutrophil chemotaxis, bacteria, bacterium, defense

Dr. Quantum explains the importance of double slit experiment in physics.

If we randomly shoot small objects, say marbles, at the screen through a slit we see a pattern on the wall where they went...

This science video contains:
quantum physics, double slit, experiment, marbles, electrons, pattern, waves, interference, particles, superposition, matter, wave function

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

Here is an experiment where sodium reacts with four different acids - 6M HCl, 12M HCl, 6M HNO3 and 15M HNO3.

The reaction with 15M HNO3 is the fastest and 12M HCl is the slowest reaction and it...

This science video contains:
experiment, reaction, sodium, HCl, HNO3, acid, fast, slow, hydrochloric acid, nitric acid