| A | B |
|---|
| Amplitude | The maximum departure from and undisturbed state. |
| Apparent Brightness | The brightness of a star as it appears to have as from an observer on Earth. |
| Black Body Curve | Is the curve of a perfect thermal emitter, it remits all the radiation that absorbs. |
| Blueshifted | The apparent changes in the frequency of light sources as you move towards, causing it to move to the blue end of the spectrum. |
| Diffraction | The deflection of bending of a light wave. |
| Doppler Effect | The apparent change if frequencies as you move towards or away from an object. |
| Electric Field | A field that extends out from an electric particle and determines the eclectic force that it exerts on all other charged particles. |
| Electromagnetic Radiation | The energy transmitted through space from one point to another without the need for there to be a connection. |
| Electromagnetic Spectrum | The collection of radiation including visible light. |
| Electromagnetism | The combined influence of the electric field and magnetic field which act perpendicular to each other. |
| Electron | A negatively charged part of an atom. |
| Frequency | The number of cycles in one second measured in hertz. |
| Intensity | Used to show the strength of radiation at any given point. |
| Interference | The ability of waves to reinforce or cancel each other. |
| Magnetic Field | Must accompany an electric field and influences magnetized objects. |
| Opacity | The extent to which radiation is blocked by an object trying to pass through it. |
| Plank’s Curve | Is another name for the black body curve. |
| Proton | The positive charged part of an atom. |
| Radial Motion | Motion along a particular line of light, which includes apparent changes in the wavelength of radiation perceived. |
| Redshifted | The apparent changes in the frequency of light sources as you move away, causing it to move to the red end of the spectrum. |
| Refracted | When visible light us divided into different wavelengths as they pass through a prism. |
| Speed of Light | The velocity which at which all electromagnetic radiation travels in space. |
| Stefan’s Law | States that the energy emitted by an object is directly proportional to the temperature raised to the 4th power. |
| Temperature | A direct measurement of the internal motion within. |
| Transverse Motion | Motion that is perpendicular to the line of sight. |
| Visible Light | The electromagnetic radiation that is perceivable by the human eye. |
| Visible Spectrum | The radiation that humans are sensitive two between 4x10-7m and 7x10-7m. |
| Wave Period | The amount of seconds that it takes the wave to repeat itself. |
| Wavelength | How meters it takes for the wave to repeat itself from crest to crest or trough to trough. |
| Waves | The form in which all electromagnetic radiation travels. |
| Wien’s Law | The maximum wavelength of an object is inversely proportional to the temperature it emits. So the hotter the object the bluer the radiation. |
