A force can be measured by measuring the twisting of the torsion wire in a torsion balance.
torsion pendulum, torsion wire, Coulomb, Cavendish, Eötvös, gravitational constant, electrostatic interaction, gravity, gravitation, torque, force, mass, charge, inertial mass, gravitational mass, torsion, balance, telescope, ore deposit, oil deposit, mechanics, twisting, physics
This animation introduces the studies of astronomers and physicists whose works fundamentally changed our view of the universe.
DC motors consist of a permanent magnet and a coil within the magnet, with electric current flowing in it.
This animation demonstrates the structure and operation of hair dryers.
In loudspeakers sound waves are generated by electromagnetic induction.
This animation demonstrates how radios work.
This animation demonstrates the mechanism and operation of record players.
This animation demonstrates Sir Isaac Newton's three laws of motion that laid the foundation for classical mechanics.
An interesting logical exercise: you have many weights that look the same, you have to find the only one that is different.
A spacecraft on its path is in a constant state of free fall.
Lateral compressive forces cause rocks to form folds. This is how fold mountains are formed.
The animation shows the way forces act on wheeled vehicles and vehicles with runners.
At the end of the 18th century, mining boomed because of the great need for raw materials in the dynamically developing industry.
As opposed to opencast mines, in underground mines the layers covering coal are not removed, coal is extracted from mine shafts.
The California Gold Rush started in 1848, near San Francisco.
As opposed to underground mines, in open-pit mines the layers covering coal are removed, coal is extracted on the surface.
Machinery that pumps crude oil to the surface