Category Archives: How fast can things go?

Professor Dave explains Special Relativity

Special Relativity Part 1: From Galileo to Einstein Special Relativity Part 2: Time Dilation and the Twin Paradox Special Relativity Part 3: Length Contraction Special Relativity Part 4: Mass-Energy Equivalence or E = mc² General Relativity: The Curvature of Spacetime

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Physics Girl – Special Relativity and the Twin Paradox

How can just two rules of Einstein’s 1905 theory of special relativity lead to seemingly paradoxical changes in the perception of time?

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Veritasium – Can You Go the Speed of Light?

Einstein’s classic thought experiment involves sitting on a train travelling at the speed of light. If you hold a mirror in front of your face, will you see your reflection in a mirror? How could light from your face reach … Continue reading

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Vsauce – Would Headlights Work at Light Speed?

If you were driving at the speed of light and turned on your headlights, what would happen?  

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Kinematics quiz

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Veritasium – Anti-Gravity Wheel?

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Circular Motion – The Wall Of Death

For shear terror, you have to watch this clip from the Diamond Maruti Car Circus in Delhi So how does a car drive around in a horizontal circle? Well for a start, friction is needed to keep the car form … Continue reading

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Circular motion – looping the loop

During the school holidays I enjoyed a trip to the circus. All good fun & always there’s some Physics! The highlight for me was the Globe of Death – three motorbikes riding in circles in a spherical cage. (Something like … Continue reading

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Vsauce – Epic leaps

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Work & energy podcast

Energy, Work, Gravitational potential energy, Kinetic energy, Work calculations, Ramps, Energy transformations, Elastic potential energy, Efficiency, Power. Download the notes. Download the video.

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