Understand E = mc^2

E = mc^2 has become one of the most famous equations in the world. Even people with no background in physics have at least heard of the equation. However, most people do not know what the equation means. More ...

CrowPi is a Raspberry Pi Project System Housed in a Laptop-Like Body

Learn everything about computers with this amazing Raspberry Pi kit housed in a laptop-like body. More ...

Types of Numbers

All numbers can be classified as a certain type as illustrated by the venn diagram shown in this article. To understand we must start with the natural numbers shown inside the venn diagram. More ...

Adding Vectors - Components of Vectors

There are two ways to add vectors, geometrically and algebraically. Adding vectors geometrically can be tedious. But algebra requires that the vectors be placed on a rectangular coordinate system. More ...

Electric Fields and Static Electricity

Static electricity is a phenomenon caused by a buildup of unbalanced electric charge that is not moving. We are all familiar with the static electric charge caused by dragging our feet across a carpet and then the sudden static discharge caused by grabbing a door knob. More ...

Phase shift in AC Circuits

In an AC circuit with a capacitor or an inductor there is a phase shift between voltage and current. In this article you learn how to calculate the amount of that phase shift. More ...

Magnetism Permeability and Retentivity

Permeability is a property of a material that describes the ease with which magnetic flux is established in the material. Retentivity is a materials ability to retain a certain amount of residual magnetism after the magnetizing force is removed. More ...

Angle Relationships: Complementary, Supplementary, Adjacent, or Vertical

Angles can be complementary, supplementary, adjacent, or vertical, and these relationships can aid in finding the value of an unknown angle. More ...

Inductors in Series and Parallel

With inductors connected in series, the total inductance is the sum of the inductances of the individual inductors With inductors in parallel, the reciprocal of the equivalent inductance is the sum of the reciprocals of the inductors connected in parallel. More ...

Average Acceleration and Instantaneous Acceleration

With the initial and final velocity vectors of a particle and the time interval between those velocities, you can determine the average acceleration vector in magnitude-angle and unit-vector notation. More ...

Basic Geometry Terminology: Point, Line, Line Segment, Ray, Plane, Plane Figure

To understand geometry you must understand its basic terminology. Here are the definitions for Point, Line, Line Segment, Ray, Plane, and Plane Figure. More ...

Vectors - Unit Vectors and Adding Vectors by Componets

A unit vector is a vector that has a magnitude of exactly 1 and points in a particular direction. Its sole purpose is to specify a direction. One way to add vectors is to combine their components axis by axis. More ...

Multiplying Vectors

Vector multiplication has applications in physics, engineering, and astronomy. It helps us understand how two vectors behave when combined. More ...

Bipolar Transistors

Transistors are semiconductor devices used to amplify or switch electronic signals. Transistors are one of the basic building blocks of modern electronics. There are basically two types of transistors, Bipolar Junction Transistors (BJT) and Field Effect Transistors (FET). More ...