handout_L12_EM - Lecture 12: Electromagnetic Radiation...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Lecture 12: Electromagnetic Radiation • Reading: Zumdahl 12.1, 12.2 • Outline – The nature of electromagnetic radiation. – Light as energy. – The workfunction of metals. Electromagnetic Radiation • Electromagnetic radiation or “light” is a form of energy. • Characterized by: –Wavelength ( λ ) –Amplitude (A) • Has both electric (E) and magnetic (H) components. Electromagnetic Radiation (cont.) Electromagnetic Radiation (cont.) • Wavelength ( λ ): The distance between two consecutive peaks in the wave. Increasing Wavelength λ 1 > λ 2 > λ 3 Unit: length (m) Electromagnetic Radiation (cont.) • Frequency ( ν ): The number of waves (or cycles) that pass a given point in space per second. Decreasing Frequency ν 1 < ν 2 < ν 3 Units: 1/time (1/sec) Electromagnetic Radiation (cont.) • The product of wavelength ( λ ) and frequency ( ν ) is a constant. ( λ )( ν ) = c Speed of light c = 3 x 10 8 m/s
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Electromagnetic Radiation (cont.) • We classify electromagnetic radiation by wavelength.
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/18/2012 for the course CHEM 152A taught by Professor Chiu during the Winter '12 term at University of Washington.

Page1 / 3

handout_L12_EM - Lecture 12: Electromagnetic Radiation...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online