H fizzics
פרטי ערוץ
H fizzics
with mr mackenzie
פרקים אחרונים
10 פרקים
charged particles in magnetic fields
These Bitesize pages will help if you need to recap on the basics of magnets. A magnetic field is produced whenever current flows through a wire. Th...
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particles in electric fields
An electric field can be used to accelerate charged particles. Conservation of energy tells us that the work done by the field is equal to the change...
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fundamental particles: quarks, leptons and the standard model
At the end of Our Dynamic Universe, we considered big things like stars, galaxies and the Universe itself. Now the Particles and Waves unit brings us...
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dark matter, dark energy and the end of the Universe
It’s complicated and cosmologists are not certain. One of the issues is only being able to see about 4% of the mass in the universe – the stars, plan...
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evidence supporting the Big Bang model: 3. Olber’s paradox
You might remember that we looked at some paradoxes when we studied special relativity earlier this term. Here is another situation where a paradox c...
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evidence supporting the Big Bang model: 2. nucleosynthesis
As we worked through the diagram explaining the stages of the Big Bang model, we looked at a section of the diagram where the Universe was hot enough...
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evidence supporting the Big Bang model: 1. CMBR
introduction to the Big Bang from mr mackenzie on Vimeo. Georges Lemaître’s theory of an expanding Universe, which has become known as the Big Bang, w...
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the Universe is bigger than the Milky Way
In the 1920s, Edwin Hubble had access to the Hooker telescope on Mount Wilson, Los Angeles. This was the largest telescope in the world at that time....
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redshift
The Doppler Effect, which is familiar to us in terms of sound waves, also affects electromagnetic waves. Normally we are talking about light but the s...
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Einstein’s Special Theory of Relativity
We started our study of Einstein’s special theory of relativity this week. Special relativity is tricky get your head round, so I’ve put together a c...
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