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Resistivity: Is Copper the Best Metal Conductor?

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 ...

The Right-Hand Rule for Magnetic Force

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 ...

Diffraction Grating Experiment: Wavelength of Laser Light

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 ...

How Fast Does Light Travel in Water vs. Air? Refraction Experiment

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 ...

Centripetal and Centrifugal Force

Have you ever wondered why you don’t fall out of an upside down loop on a roller coaster, or why a satellite can stay in orbit around the earth? Centripetal force is a force that causes an object to m ...

Corilois Effect and Hurricanes

A hurricane, also called a typhoon or cyclone, is a common name for a tropical cyclone, which is a spinning storm system originating over water having wind speeds of over 118 km/hour or 73 miles/hour! ...

The Limewater Carbon Dioxide Test

Carbon dioxide, also commonly known by its chemical formula CO2, is one of the major building blocks of life. It is usually found in its gaseous form, and is a major part of the plant and animal life ...

Complete Circuit: How Does a Flashlight Work?

Electricity makes our lives easier by powering our lights, refrigerators, and even some cars! Electricity can travel around in systems called circuits, which carry current—a stream of flowing electron ...

Do Hand Soaps and Sanitizers Prevent the Growth of Bread Mold?

Have you ever gone to make a sandwich only to discover that the last two slices of bread have mold on them? We are always told to use soaps and hand sanitizers to clean our hands of tiny organisms, bu ...

Light Intensity and Distance

Light, a form of electromagnetic radiation, travels in waves. The range of the electromagnetic spectrum we can see is called visible light.Light intensity is a measure of the average power associated ...

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