Hello!
Today in class we corrected questions 1, 3 and 4 in the seperated question booklet of this unit handed to us last week.
Answers:
(Corrected on the board:)
1. The color would different when it is being reflected because when the speed decreases the wavelength will be less.
3. Plauck's quantum hypothesis suggests that light comes in small bundles of energy called QUANTA. QUANTA is similar to Newton's idea that light consists of small particles.
4. We can learn that we must NOT BELIEVE a theory only on the basis that it comes from a famous person. There MUST be strong supporting evidence.
After correcting the questions, we read pages 8 to 11 and recieved a worksheet based on information you would have to fill out for one of the scientists.
Review:
Scientists and their measurements of speed are..
Galileo (1564 - 1642) 3.4 x 10^3 m/s.
Roemer (1644 - 1710) 2.0 x 10^8 m/s
Fizeau (1819 - 1896) 3.133 00 x 10^8 m/s
Foucault (1819 - 1868) 2.997 96 x 10^8 m/s
Michelson (1852 - 1931) 2.997 29 x 10^8 m/s
Today's Accepted Value 2.997 924 58 x 10^8 m/s
These scientists, beginning with Galileo and his first attempt, used their own methods to observe the speed of light.
The end!
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