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Grasping light

Geoff Cottrell.

in Telescopes

December 2016; p ublished online December 2016 .

Chapter. Subjects: Astronomical Instrumentation, Methods, and Techniques; History of Engineering and Technology. 3323 words.

‘Grasping light’ begins by explaining the workings of the human eye, which collects light from all directions. It goes on to introduce the main features of light, describing its dual...

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Instruments of light

Geoff Cottrell.

in Telescopes

December 2016; p ublished online December 2016 .

Chapter. Subjects: Astronomical Instrumentation, Methods, and Techniques; History of Engineering and Technology. 4685 words.

In the eye, detection is done by the retina. In telescopes operating in different parts of the electromagnetic spectrum, light interacts with matter in different ways, and so a variety of...

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A mirror held up to nature

Geoff Cottrell.

in Telescopes

December 2016; p ublished online December 2016 .

Chapter. Subjects: Astronomical Instrumentation, Methods, and Techniques; History of Engineering and Technology. 3521 words.

‘A mirror held up to nature’ looks at some of today’s remarkable optical and infrared large telescopes, highlighting the technologies that made them possible and the science results that...

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The next telescopes

Geoff Cottrell.

in Telescopes

December 2016; p ublished online December 2016 .

Chapter. Subjects: Astronomical Instrumentation, Methods, and Techniques; History of Engineering and Technology. 4351 words.

Each question that telescopes have helped answer has led to new questions: what is dark matter and dark energy? How did the first galaxies form? Are there habitable, Earth-like exoplanets?...

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The radio sky

Geoff Cottrell.

in Telescopes

December 2016; p ublished online December 2016 .

Chapter. Subjects: Astronomical Instrumentation, Methods, and Techniques; History of Engineering and Technology. 5115 words.

‘The radio sky’ considers radio telescopes that can see much longer wavelengths. Cosmic radio waves were first discovered in 1932 by Karl Jansky, with the first radio telescope built in...

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Space telescopes

Geoff Cottrell.

in Telescopes

December 2016; p ublished online December 2016 .

Chapter. Subjects: Astronomical Instrumentation, Methods, and Techniques; History of Engineering and Technology. 6703 words.

The last seven decades have seen telescopes launched into space, vastly enhancing the crispness of the images they produce and expanding the range of observable wavelengths to include UV,...

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Telescopes

Geoff Cottrell.

December 2016; p ublished online December 2016 .

Book. Subjects: Astronomical Instrumentation, Methods, and Techniques; History of Engineering and Technology. 168 pages.

Telescopes have made dramatic revelations about the Universe and our place in it. Galileo’s observations of the Moon’s cratered surface and discovery of Jupiter’s four big satellites...

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