Speed of Light

Today we learned that the speed of light in a vacuum is c = 300,000,000 m/s. There is nothing faster. Sound in air is only about 340 m/s - about a million times slower!

We also attempted to calculate the speed of light in air using a microwave oven and some candy bars. Just remember that speed of a wave = wavelength x frequency.

Don't forget to turn in last night's homework: Light I.

Tonight's homework, due tomorrow: Light II for regular classes, Honors Light II for the honors section and anyone else taking the honors supplement.

Polarization of Light

Here are some notes from a couple of years ago. We took some notes today, but I didn't get a picture of them. Bellwork to follow.

Homework, due tomorrow: Light I
Due today: EM Spectrum Mini-Poster

Electromagnetic Spectrum

Bellwork:

Notes that some classes started yesterday but we all finished today:

Homework, due Monday: a mini-poster of the EM Spectrum.

Light

Due to the assembly, some classes got no farther than the bellwork, below. Some took more notes, which we will finish tomorrow. no homework tonight.

Unit I Test: Waves and Sound

Test today! If you miss this test, you must make it up after school by the end of the week.

Unit I Review: Waves and Sound

Today you are working on the study guide for the test tomorrow. First period, you receive it today. All others received it yesterday. Remember that you are allowed to make a cheat sheet of no more than 15 square inches (3"x5" note card) to use on the test.

Doppler Effect

Today we demonstrated and learned about the Doppler Effect. This will not show up on this unit's test, but it will show up on next unit's test. No homework tonight, but Waves II is due today.