4 results found for physics

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00:21:00

Force or (potential) energy

by Slobodan Danko Bosanac
Force or (potential) energy
for 18-22 and upwards,
Lectures | 18-22 and upwards | 11 years ago | 1658 views
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Classical dynamics uses the concept of force for its solution. On the other hand force in quantum dynamics has no meaning and the concept of potential energy is used instead. The question is, "which one of the concepts is more fundamental?".

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Dark Matter, Dark Energy

by George Smoot
Dark Matter, Dark Energy
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 2834 views
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Smoot's Nobel Prize was awarded for his analysis of that whisper from the Big Bang, the cosmic microwave background radiation. Today he hopes CERN's data will again transform our understanding of the universe. Young scientists Bilge Demirkoz and Benj....

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00:06:00

Abolishing Time?

by David Gross
Abolishing Time?
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 1862 views
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David Gross's Nobel Prize was for work on the 'strong' force which acts between quarks inside the atom. Now he works on string theory, hoping to understand how all the forces of nature could be united. He believes the next steps may involve throwing ....

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00:14:00

The Forces of Nature

by Brian Cox
The Forces of Nature
for 18-22 and upwards,
Lectures | 18-22 and upwards | 15 years ago | 1507 views
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Can everything that happens in the universe be explained in terms of just three forces? Particle Physicist Brian Cox talks us through the history of our scientific understanding, revealing why scientists have come to believe this. Brian explores the ....

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