6. Radiation
• light common term for electromagnetic radiation
• caused by wavelengths and frequencies
7. Radiation
• light common term for electromagnetic radiation
• caused by wavelengths and frequencies
• wavelength - distance b/w peaks on a wave
8. Radiation
• light common term for electromagnetic radiation
• caused by wavelengths and frequencies
• wavelength - distance b/w peaks on a wave
• frequency - # of waves/oscillations per
second
9. Mathematical Relationship
c = λf
• c = speed of light (3.0 x 108 m/s)
• λ = wavelength (m)
• f = frequency (Hz)
16. Telescopes
• BENEFITS:
• ability to attach different detectors to observe
all wavelengths
• brings much more light to focus than human
eye
17. Telescopes
• BENEFITS:
• ability to attach different detectors to observe
all wavelengths
• brings much more light to focus than human
eye
• allows astronomers to use specialized
equipment
18. Telescopes
• BENEFITS:
• ability to attach different detectors to observe
all wavelengths
• brings much more light to focus than human
eye
• allows astronomers to use specialized
equipment
• can be used to make time exposures w/ aid of
cameras or other imaging devices
23. Types of Telescopes
• 2 types used to focus visible light:
• refracting
• reflecting
• majority used
24. Types of Telescopes
• 2 types used to focus visible light:
• refracting
• reflecting
• majority used
• most located @ observatories @ high
elevations
29. Telescopes cont...
• interferometry - process of linking
separate telescopes together so they act
as one telescope
• detailed image improves as distance
b/w telescope increases
32. Satellites
• sent into space to collect information
• b/c earth’s atmosphere blocks infrared and
ultraviolet radiation, x-rays, and gamma rays
33. Satellites
• sent into space to collect information
• b/c earth’s atmosphere blocks infrared and
ultraviolet radiation, x-rays, and gamma rays
• to obtain close up observations
34. Satellites
• sent into space to collect information
• b/c earth’s atmosphere blocks infrared and
ultraviolet radiation, x-rays, and gamma rays
• to obtain close up observations
• obtain samples from nearby objects
38. Hubble Space Telescope
• one of best-known space observatories
• designed to obtain sharp, visible images w/
out atmospheric interference and make
observations in infrared and ultraviolet
wavelengths
44. Human Space-Flight
• space shuttle program provides environment
for scientists to study effects of space
45. Human Space-Flight
• space shuttle program provides environment
for scientists to study effects of space
• long-term effects studied in space stations
46. Human Space-Flight
• space shuttle program provides environment
for scientists to study effects of space
• long-term effects studied in space stations
• International Space Station