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The RavensSunday, 19th April 2015 04:05 - BBC World Service RadioA social work student brefriends a sex worker in Sydney - but how easy is changing a life? The second of two... Read more: The Ravens: 24th International Radio Playwriting Competition winner
Thinking Allowed: The Ethnography Award 'Shortlist' 2015Monday, 20th April 2015 00:15 - BBC Radio 4
Secret History Of... Deptford High StTuesday, 21st April 2015 20:00 - BBC Four
Secret History Of... Deptford High StWednesday, 22nd April 2015 02:00 - BBC Four
A History of Ideas - Descartes Cogito Ergo SumAvailable until Thursday, 14th April 2016 08:30Stephen Fry explains Rene Descartes argument 'Cogito Ergo Sum' - 'I think, therefore I am'. Watch now: OU on the BBC: A History of Ideas - Descartes Cogito Ergo Sum
A History of Ideas - Erving Goffman's Performed SelfAvailable until Thursday, 14th April 2016 08:15
Thinking Allowed: The Ethnography Award 'Shortlist' 2015Available until Friday, 15th April 2016 09:45
A History of Ideas - John Locke and personal memoryAvailable until Thursday, 14th April 2016 11:15
What does it mean to be me?Watch these short and snappy animations on the subject of me: the individual, memory, 'self' and... Watch now: What does it mean to be me?
Take the photographic memory testCan you capture scenes just by looking at them? Find out with our photographic memory test. Launch now: Take the photographic memory test
Introduction to bookkeeping and accountingThis free course Introduction to bookkeeping and accounting provides an introduction to the... Try: Introduction to bookkeeping and accounting now
Succeed with maths – Part 1[BETA] If you feel that maths is a mystery that you want to unravel then this short 8-week course... Try: Succeed with maths – Part 1 now
Telescopes and spectrographs
This unit looks at how telescopes and spectrographs are designed to improve our ability...
This unit looks at how telescopes and spectrographs are designed to improve our ability to observe the universe. You will examine how different technologies have been developed over the last four hundred years to enable us to look deep into space.
By the end of this unit you should be able to:
- understand the application of basic principles in geometrical optics;
- appreciate the phenomena relating to the wave nature of light.
- Current section: Learning outcomes
- 1 Telescopes
- 1.1 A milestone in the advancement of astronomy
- 1.2 Optical elements
- 1.3 Refracting telescopes
- 1.4 Reflecting telescopes
- 1.5 The characteristics of astronomical telescopes
- 1.6 Telescope mountings
- 1.7 Summary of Section 1 and questions
- 2 Spectographs
This is an extract from an Open University course which is no longer available to new students. If you found this interesting you could explore more free Science course units or view the range of currently available OU Science courses.