Physics-Cathode ray and cathode ray tubes
Cathode rays, as we now know, are streams of electrons generated by high electric field-induced gas ionization (old cold cathode ray tubes) or heat-induced […]
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Physics- Double-slit experiment of light
Young’s interference experiment, also known as Young’s double-slit experiment, was the original version of the modern double-slit experiment performed by Thomas Young in 1803. […]
Electronics-How fingerprint readers work
Unlock your smartphone or laptop with the touch of a finger has become normal during the last couple of years. This is made possible […]
Mechanics-How a sewing machine works
A sewing machine works by weaving thread through fabric from the needle above and from the bobbin below, creating very small stitches through the […]
Mechanics-Lock and Key
Here is an animation showing how to unlock a lock with (or without, for illustration purpose only) a key! Mordent locks have more complex structures, but they […]
Electronics-Build a solar powered house
The first silicon solar cell, the precursor of all solar-powered technologies, was produced by Bell Laboratories in 1954. It was claimed to be “the beginning of […]
Chemistry-Map of chemistry
An amazing video summarising all branches of Chemistry!
Physics/mathematics-Map of mathematics
Here is an amazing video depicting the various branches of mathematics!
Mechanics-How a mechanical watch works
Watch this amazing video about how a mechanical watch works!
Physics-A cool little cube that can jump, balance and walk!
A cool little cube that can balance itself, jump up and “walk”! But how does it do these tricks, and what is the physics […]
Physics-Build your own electromagnetic train
It is more appropriate to call this an electromagnetic train, rather than electric train. How does it work? The “train” moves because of the […]
Biology/Electronics-Depth perception and 3D movie
Depth perception is our ability to perceive the world in three dimensions (3D), and to gauge how far away an object is. This actually […]
