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88 Miles per hour: Difference between revisions
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|resourcenumber=SC0023 | |resourcenumber=SC0023 | ||
|age= Secondary, Year 10. | |age= Secondary, Year 10. | ||
|content=A presentation about the frontiers of human understanding and the truly strange world proposed by Relativity and Quantum Mechanics. Incidentally, 88 mph is the speed at which the | |content=A presentation about the frontiers of human understanding and the truly strange world proposed by Relativity and Quantum Mechanics. Incidentally, 88 mph is the speed at which the 'Delorean' car is able to travel through time in 'Back to the Future'. This is lesson 5 of 6 in the 'Astronomy masterclass' series (SC0018). | ||
|strategy= | |strategy= | ||
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|related resources=[[Astronomy Masterclass]], [[It's full of stars]], [[From Earth to Moon]], [[Celestial Wanderers]], [[Recreating the Big Bang]] | |related resources=[[Astronomy Masterclass]], [[It's full of stars]], [[From Earth to Moon]], [[Celestial Wanderers]], [[Recreating the Big Bang]] | ||
|other= | |other= | ||
|format=A | |format= | ||
A 34 minute narrated screencast which is part of the full, six hour 'Astronomy Masterclass'. Also supplied as a Prezi and a Acrobat file should you wish to do the presentation youself. | |||
|resources= | |||
* Narrated video - 34 mins http://www.youtube.com/watch?v=fXLUTm-rXnA&feature=relmfu <br /> | |||
* Slide presentation - Prezi - http://prezi.com/2hk390sfkqjh/the-astronomy-masterclass/ <br /> | |||
* Acrobat document - 241Mb - for this session 5, use pages 141-199 of Astronomy masterclass.pdf at https://www.box.com/shared/aqnk3lvr09 | |||
* Astronomy Masterclass - full Prezi - http://prezi.com/2hk390sfkqjh | |||
* TES Resources link - http://www.tes.co.uk/teaching-resource/The-Astronomy-Masterclass-6070303/ This also includes a link to the seven YouTube videos. | |||
}} | }} | ||
[[Category:Secondary]] [[Category:Science]] | [[Category:Secondary]] [[Category:Science]] | ||
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* Lord Kelvin made some outlandish statements, but also did some very good science, however it is wrong to consider him stupid for them. Predicting the future is notoriously difficult... <br /> | * Lord Kelvin made some outlandish statements, but also did some very good science, however it is wrong to consider him stupid for them. Predicting the future is notoriously difficult... <br /> | ||
:http://en.wikipedia.org/wiki/William_Thomson,_1st_Baron_Kelvin<br /> | :http://en.wikipedia.org/wiki/William_Thomson,_1st_Baron_Kelvin<br /> | ||
* | * The theory of special relativity <br /> | ||
:- Thought experiment – turning the lights on, on a car travelling very, very fast.<br /> | :- Thought experiment – turning the lights on, on a car travelling very, very fast.<br /> | ||
:- Is the speed of light in this case c? Or c + v?<br /> | :- Is the speed of light in this case c? Or c + v?<br /> | ||
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:- The case of a black hole<br /> | :- The case of a black hole<br /> | ||
* General relativity states that time also slows down in the case of a gravitational field. So time passes faster the weaker gravity is – example the clocks on the GPS satellites have to be constantly corrected. This can lead to extreme slowdowns of time. If you fell into a black hole – your friend watching would see you almost stop completely on the event horizon – whereas you would see all the future of the universe flash before your eyes as you spaghettified. | * General relativity states that time also slows down in the case of a gravitational field. So time passes faster the weaker gravity is – example the clocks on the GPS satellites have to be constantly corrected. This can lead to extreme slowdowns of time. If you fell into a black hole – your friend watching would see you almost stop completely on the event horizon – whereas you would see all the future of the universe flash before your eyes as you spaghettified. | ||
:http://en.wikipedia.org/wiki/Spaghettification | :-http://en.wikipedia.org/wiki/Spaghettification | ||
:http://www.slate.com/id/2199664/ | :-http://www.slate.com/id/2199664/ | ||
* Relativity tells us something very strange happens with big and fast things. So what about small things?<br /> | * Quantum mechanics. Relativity tells us something very strange happens with big and fast things. So what about small things?<br /> | ||
:- Key figure Niels Bohr http://en.wikipedia.org/wiki/Niels_Bohr<br /> | |||
- Key figure Niels Bohr http://en.wikipedia.org/wiki/Niels_Bohr<br /> | :- Quantum means “the smallest discrete quantity of some physical property that a system can possess” so a quantum of solace basically means – a very small bit of peace and quiet. It is important because if the universe has a smallest possible size for something – then it will be impossible to measure something smaller.<br /> | ||
- Quantum means “the smallest discrete quantity of some physical property that a system can possess” so a quantum of solace basically means – a very small bit of peace and quiet. It is important because if the universe has a smallest possible size for something – then it will be impossible to measure something smaller.<br /> | :- How long is a table? Analogous to the how long is a piece of string http://news.bbc.co.uk/1/hi/sci/tech/8363934.stm<br /> | ||
- How long is a table? Analogous to the how long is a piece of string http://news.bbc.co.uk/1/hi/sci/tech/8363934.stm<br /> | :- Video from the HBO series “the elegant universe” adapted from a book by Brian Greene. The key point is that QM works very very well with the small – and GR works well with the big – but when you deal with something Heavy and small, like a black hole or the “big bang, you get nonsensical answers as you have to use BOTH. Therefore there is something wrong with one or both of these foundational theories in science.<br /> | ||
:- Close is often good enough. Video to show we got to the moon without worrying about it. | |||
:- But sometimes it isn’t. Video - Chloe and Keith’s Wedding clip is a setup, but it is still funny... <br /> | |||
• Pioneer Anomaly also points to potential wrongness in theory of gravity. See http://en.wikipedia.org/wiki/Pioneer_anomaly<br /> | |||
• Pioneer Anomaly also points to potential wrongness in theory of gravity. http://en.wikipedia.org/wiki/Pioneer_anomaly<br /> | |||
End of Session 5<br /> | End of Session 5<br /> | ||
