Uv Visible Spectroscopy

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UV -VISIBLE SPECTROSCOPY power point presentation.

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MOLECULAR SPECTROSCOPY

Spectroscopy Study of the Interaction of Electromagnetic Radiation (Energy) and Matter When energy is applied to matter it can be absorbed, emitted, cause a chemical change (reaction), or be transmitted. Electromagnetic Spectrum:-

Cosmic (Gamma) Ultraviolet Visible Microwave Radio

X-Ray Infrared

THE ELECTROMAGNETIC SPECTRUMhigh high Frequency ( ) Energy low low

X-RAY

ULTRAVIOLET

INFRARED MICROWAVE

RADIO

FREQUENCY

Ultraviolet

Visible

Vibrational infrared 2.5 m 15 m

Nuclear magnetic resonance 1m 5m

200 nm

400 nm BLUE

800 nm RED

short

Wavelength ( )

long

THE SOLAR SPECTRUM

VISIBLE SPECTRUM(wavelengths of various radiations)

Violet: 400 - 420 nm Indigo: 420 - 440 nm Blue: 440 - 490 nm Green: 490 - 570 nm Yellow: 570 - 585 nm Orange: 585 - 620 nm Red: 620 - 780 nm

Electromagnetic SpectrumType of Radiation Frequency Range (Hz) 1020-1024 1017-1020 1015-1017 4-7.5x1014 1x1014-4x1014 1013-1014 3x1011-1013