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Vocab
| Question | Answer |
|---|---|
| Absorption Spectrum | A graph that shows electromagnetic radiation absorbed as a function of frequency. |
| Carotenes | A class of compounds responsible for the color of carrots and fall leaves |
| Chlorophylls | A class of compounds found in plant leaves that produce their green color. |
| Electric Field | The area around a charged particle where forces are experienced. |
| Electromagnetic Radiation | Radiation that is propogated by the combination of electric and magnetic fields including gamma rays, x rays, ultraviolet light, visible light, infared light, microwaves, and radio waves. |
| Electronic Relaxation | An electronic transition in which an electron goes from a higher energy orbit to a lower energy one |
| Electronic Transition | When the electrons in an atom or molecule move from one energy state to another. |
| Energy State | The electron configuration of a molecule or atom with electrons in a perticular orbits and therefore at particular energies. |
| Excited State | An unstable state for an atom or molecule in which energy has been absorbed but not reemitted. |
| Fluorescence | The fast emission of light following electronic excitation. |
| Frequency | For a wave, the number of cycles or crests that pass through a point in one second, usually reported in units of cycles per second or hertz. |
| Gamma Rays | The shortest wavelength and most energetic form of electromagnetic radiation. |
| Infared Light (IR) | That portion of the electromagnetic spectrum that is immediately adjacent to red light. I |
| Laser | An acronym for light amplification by stimulated emission of radiation. |
| Laser Cavity | In a laser, the lasing medium is placed inside a laser cavity consisting of two mirrors, one of which is only partially reflecting. |
| Lasing Medium | Laser light is formed by putting electrical or light energy into an element or a compound called the __________ |
| Magnetic Field | The area around a magnet where forces are experienced. |
| Magnetic Resonance Imaging (MRI) | A type of spectroscopy involving magnetic fields and radio waves that allows medical doctors to image organs and structures within the human body |
| Microwave Radiation | The fraction of the electromagnetic spectrum that is between the infared region and the radio wave region. |
| Nuclear Magnetic Resonance (NMR) | A type of spectroscopy involving magnetic fields and radio waves and often used by chemists and biochemists to deduce molecular structures. |
| Phosphorescence | The slow emission of light following electronic excitation |
| Photodecomposition | The breaking of bonds within molecules due to the absorption of light |
| Photons | Particles of light |
| Radio Waves | The longest wavelength and least energetic form of electromagnetic radiation |
| Relaxation Time | The time required for nuclei to return to their original orientation after being pushed by electromagnetic radiation |
| Resonance Frequency | The exact electromagnetic frequency that causes an energy transition in a molecule or atom |
| Spectroscopy | The interaction of light with matter |
| Ultraviolet Light (UV) | The fraction of the elecromagnetic spectrum that is between the visible region and the xray region |
| Visible Light | The fraction of the electromagnetic spectrum that is visible to the human eye |
| Wavelenth | The distance between wave crests, usually reported in units of length such as meters or nanometers |
| x-rays | The fraction of the electromagnetic spectrum that is between the ultraviolet region and teh gamma ray region |
Created by:
zfran
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