Photoelectric effect
Why can the same light beam eject electrons from one metal but none from another? Which properties of the light determine the photoelectrons' energy?
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PHYSICS · 9 EXPLORATION STEPS
The magnetic field of a current
If a magnetic field cannot be seen or touched, how can it be represented and its direction determined?
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- 01
Reveal the field with iron filings
- 02
Concentric circular patterns
- 03
Grip the wire to determine direction
- 04
Line density and field strength
- 05
Field lines through a loop
- 06
Superposition of turns
- 07
Decay along the axis
- 08
Uniform field inside
- 09
Quiz: locate the solenoid end
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Charging and discharging a capacitor
What does a capacitor actually store? Can a single quantity describe its ability to store charge?
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The relationship between acceleration, force and mass
Without measuring force or acceleration directly, can a paper tape and a few masses reveal the relationship between a, F and m?
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