Friday, Feb 20, 2009

Reviewed for SHM test. Answered any questions from worksheet. There weren't very many questions.

Started lecturing on waves.
Two types of waves - mechanical and electromagnetic
Waves can also be classified as longitudinal or transverse.

Used slinky to show features of each wave and also to show the relationship between frequency, energy, and wavelength.

Introduced the equation, v = f*wavelength

Found wavelengths of AM and FM radio waves. Wavelength of microwave is about 1 ft to fit inside the box in kitchen.

Test tomorrow on SHM