How fast does light travel, and does it travel faster in water or air? The fastest thing in the whole universe is the speed of light in a vacuum (like outer space!), clocking in at a great 2.99 x 108 ...
The interactions between current, the flow of electrons, and magnets can be used to do useful work, like power motors, and will continue to be important in the future because they can be used for thin ...
Electrical resistance, denoted by R, is the total opposition to the passage of electric current, or the flow of electrons. Resistance depends on the material, area, and length of what the current is p ...
Forces cause objects to move or deform in some way. Newton’s third law states that for every force, there is an equal and opposite force. This is true for springs, which store and use mechanical energ ...
Hans Christian Oersted was a Danish scientist who explored the relationship between electric current and magnetism. Current is the flow of electrons, and is how we hardness electricity. Currents creat ...
Electromagnetism is a cool (and useful) natural phenomenon. Electric current, which is the flow of electrons, creates its own magnetic field when in a closed loop. In conjunction with other magnets or ...
Light propagates, or travels, in waves. Waves have two main properties: frequency and wavelength. When you know one, it’s pretty easy to calculate the other.When light waves overlap they create interf ...
Michael Faraday was a 19th century English scientist who is credited with many great discoveries in the realm of physics and chemistry, specifically on the relationship between current and magnets, an ...
Total internal reflection is what happens when light enters a new medium, or material, at an angle larger than a critical angle. A critical angle is when the incident angle, or the angle at which ligh ...
Mass is a measure of how much matter, or material, an object is made of. Weight is a measurement of how the gravity of a body pulls on an object. Your mass is the same everywhere, but your weight woul ...