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Objective (lens)
Focus (image) Eyepiece (lens)
Incoming light from object
Eyepiece (lens)
Eye
Eye Focus (image) Objective (lens)
Incoming light from object Secondary mirror
Figure 12.2: Ray diagram of a Reflecting Telescope
Wave Length in Nenometer
Visible Light
Figure 12.3: Spectrum of white light and its wavelength distribution
All red light from sun focused here Red light
Opaque barrier Narrow beam of light
Screen or detector
Blue light All blue light focused here Prism
Incoming light
Light source (hot bulb)
Lens
Lens
Figure 12.4: Main parts of a Spectroscope and their working
Soyuz Space Craft
Apollo-17 Command Module
International Space Station (ISS) Figure 12.5 Examples of manned spacecrafts
Figure 12.6: Examples of un-manned spacecrafts
Figure 12.7: Artistic view of GPS satellites in orbiting around the Earth
Shorter wavelength
Longer wavelength
Wavelength
Figure 12.8: A Weather Satellite
Figure 12.9: A Remote sensing satellite imaging Earth
Figure 12.11: Damage caused by space debris on US Space Shuttle
Figure 12.12: Twin brothers Mark and Scott Kelly. Mark spent a year on ISS in space to study long term space travel effects
Figure 12.13: A satellite Launch Facility
Figure 12.14: A robotic arm on ISS