Spectroscopy and the Electromagnetic Spectrum - AP Chemistry

Fourier Transform Infrared. Advanced infrared technique using mathematical transformation methods.

Directly proportional. Higher frequency means higher photon energy.

Quantum. Fundamental unit of energy in quantum mechanics.

700 nm to 1 mm. Electromagnetic radiation longer than visible light wavelengths.

Atomic emission spectroscopy. Technique that measures light emitted by excited atoms.

Radio waves. Lowest frequency electromagnetic radiation in the spectrum.

Perfect emitter and absorber of radiation. Theoretical object that absorbs and emits all radiation perfectly.

Selects specific wavelength of light. Device that isolates narrow wavelength bands for analysis.

Determining molecular structure. NMR reveals atomic connectivity and molecular arrangements.

Measure of light absorbed by a sample. Quantifies how much light a substance absorbs at specific wavelengths.

$3.00 \times 10^8$ m/s. Fundamental physical constant for electromagnetic radiation in vacuum.

Absorbance of UV and visible light. Measures how much ultraviolet and visible light is absorbed.

$\nu = \frac{c}{\lambda}$. Frequency equals speed of light divided by wavelength.

$c = \lambda \nu$. Speed of light equals wavelength times frequency.

Infrared (IR) spectroscopy. Uses infrared radiation to detect molecular bond vibrations.

Continuous spectrum. White light separates into all visible wavelengths without gaps.

Radio waves. Lowest frequency electromagnetic radiation in the spectrum.

Perfect emitter and absorber of radiation. Theoretical object that absorbs and emits all radiation perfectly.

Directly proportional. Higher frequency means higher photon energy.

X-rays. High-energy radiation used to determine crystal structures.

Quantum. Fundamental unit of energy in quantum mechanics.

Inversely proportional. As one increases, the other decreases proportionally.

Measure of light absorbed by a sample. Quantifies how much light a substance absorbs at specific wavelengths.

700 nm to 1 mm. Electromagnetic radiation longer than visible light wavelengths.

Atomic emission spectroscopy. Technique that measures light emitted by excited atoms.

$c = \lambda \nu$. Speed of light equals wavelength times frequency.

$\nu = \frac{c}{\lambda}$. Frequency equals speed of light divided by wavelength.

400 to 700 nm. Range of electromagnetic radiation detectable by human eyes.

Continuous spectrum. White light separates into all visible wavelengths without gaps.