Across
- 4. a tiny bit of matter that makes up everything in the universe
- 6. a property applying to transverse waves that specifies the geometrical orientation of the oscillations.
- 8. energy only existing in bundles of specific amounts
- 10. a type of radiant energy that's invisible to human eyes but that we can feel as heat
- 12. electrons eject from the cathode only if the frequency of the incident radiation is greater than a certain minimum value
- 13. the emission of electrons when electromagnetic radiation falls on an object
Down
- 1. the minimum thermodynamic work needed to remove an electron from a solid to a point in the vacuum immediately outside the solid surface.
- 2. the physical interaction among electric charges, magnetic moments, and the electromagnetic field.
- 3. quantized bundles of energy
- 5. shift in energy of scattered photons
- 7. the spreading of waves around obstacles.
- 9. the continuous spectrum or pattern of bright lines or bands seen when the electromagnetic radiation emitted by a substance is passed into a spectrometer
- 11. energy that comes from a source and travels through space at the speed of light