Tuesday, October 21, 2008
How a CCD Works
a cell phone picks up the different in the voice. it reads the changes in the pitch and frequency
Monday, October 20, 2008
Two Sides to Every Story
In my opinion I believe there has to be other life out there. Our universe is so big... we don't know how big it is! With billions of other planets in the universe there has to be another earth like planet circulating another sun in another galaxy.
Black Holes - A Type of Dark Matter
A. accretion disk- spiraling gas and dust that spins around a black hole. Can be heated so intensely that it emits x-rays.event horizon- imaginary sphere around the black hole where all matter is crushed to a single point with infinite density.jets of gas- hot gas and energy released in a beam perpendicular to the accretion disk.
B. Gravity is directly proportional to mass, so with more mass comes more gravity.
C. If we are lucky, we could see the contrast between a black hole and bright object behind it. You could also see the jets of gas shooting out of black holes (Quasars).
D. The radius that needs to be breached in order for an object to become a black hole.
E. The space-time fabric described by einstein suggests an unending pit.
Andy, Devon, and Dan
B. Gravity is directly proportional to mass, so with more mass comes more gravity.
C. If we are lucky, we could see the contrast between a black hole and bright object behind it. You could also see the jets of gas shooting out of black holes (Quasars).
D. The radius that needs to be breached in order for an object to become a black hole.
E. The space-time fabric described by einstein suggests an unending pit.
Andy, Devon, and Dan
James Webb Telescope
A. Measures wavelenghts from 0.6 to 27 micrometers. It picks up infrared light.
B. Comes out in 2013
C. No light has been collected by this telescope yet
D. A 6.5 meter mirror is used
B. Comes out in 2013
C. No light has been collected by this telescope yet
D. A 6.5 meter mirror is used
Escaping the Sun
A. # of layers interactions
5 24
10 157
15 174
20 479
25 947
As the number of layers increased so did the number of interactions
B. # of layers interactions
5 31
10 106
15 233
20 433
25 706
the data is about the same. The data is more accurate because there were more photons and it took the average number of interactions
C. ev nm photons sent photons detected
1.5 828 15 14
1.8 690 15 82.0 621 15 13
2.3 540 15 11
2.5 497 15 11
the wavelength goes down. the number of photons detected also goes down
D. ev nm gas atoms photons sent photons detected
2.2 565 O 15 14
2.2 565 Mg 15 132.2 565 Na 15 9
2.2 565 Ca 15 13
2.2 565 H 15 11
it didn't have much of an effect on the number of photons detected
Worked with Billy and Devon
5 24
10 157
15 174
20 479
25 947
As the number of layers increased so did the number of interactions
B. # of layers interactions
5 31
10 106
15 233
20 433
25 706
the data is about the same. The data is more accurate because there were more photons and it took the average number of interactions
C. ev nm photons sent photons detected
1.5 828 15 14
1.8 690 15 82.0 621 15 13
2.3 540 15 11
2.5 497 15 11
the wavelength goes down. the number of photons detected also goes down
D. ev nm gas atoms photons sent photons detected
2.2 565 O 15 14
2.2 565 Mg 15 132.2 565 Na 15 9
2.2 565 Ca 15 13
2.2 565 H 15 11
it didn't have much of an effect on the number of photons detected
Worked with Billy and Devon
Lab 4: Measuring the Speed of Light with Chocolate
Distance between hotspots = 12 cm
1/2 wavelength = 12 cm = .12 m
Frequency = 2.5 * 10^9 Hz (1/s)
c = speed of lightx = 1/2 wavelength
f = frequency
Equation -> c (m/s) = 2 * x (m) * f (1/s) -> c = (2) (.12) (2.5 * 10^9)
Experimental c = 6.5 * 10^8 m/s
Actual = 2 * 10^8 m/s
1/2 wavelength = 12 cm = .12 m
Frequency = 2.5 * 10^9 Hz (1/s)
c = speed of lightx = 1/2 wavelength
f = frequency
Equation -> c (m/s) = 2 * x (m) * f (1/s) -> c = (2) (.12) (2.5 * 10^9)
Experimental c = 6.5 * 10^8 m/s
Actual = 2 * 10^8 m/s
Monday, September 22, 2008
Notes on Stellar Spectra
1. it would most likely be fission
2. closer, so you can tell when there is a change in a position
3. brightness of the star
4. absorption is when something is absorbed and emission is when something is given off
5. magnitude is how bright the star really is and intensity is how bright you see it
2. closer, so you can tell when there is a change in a position
3. brightness of the star
4. absorption is when something is absorbed and emission is when something is given off
5. magnitude is how bright the star really is and intensity is how bright you see it
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