12/7/22 Electrons in Atoms Notes :
Reflections: Light changes direction when it bounces off a surface.
Refraction: Light changes direction as it passes from one medium to another.
Example: when you see a pencil through water, the water changes the image of the pencil due to refraction.
An example of refraction is when sunlight separates into a continuous spectrum when passed through a prism. Each color has a particular wavelength and each wavelength bends at a different angle. A prism separates light.
Diffraction: light changes direction when it passes through an opening or around obstacles
Interference: a phenomenon that occurs when two waves meet while traveling along the same medium.
black body experiment
photoelectric line emission spectra
Hydrogen line
- These results could not be explained based on what was known then about light.
Explained the blackbody experiment:
He concluded that light is emitted and absorbed by atoms in small quantities he called quanta.
We say energy is “quantized”
Reflections: Light changes direction when it bounces off a surface.
Refraction: Light changes direction as it passes from one medium to another.
Example: when you see a pencil through water, the water changes the image of the pencil due to refraction.
An example of refraction is when sunlight separates into a continuous spectrum when passed through a prism. Each color has a particular wavelength and each wavelength bends at a different angle. A prism separates light.
Diffraction: light changes direction when it passes through an opening or around obstacles
Interference: a phenomenon that occurs when two waves meet while traveling along the same medium.
black body experiment
photoelectric line emission spectra
Hydrogen line
- These results could not be explained based on what was known then about light.
Explained the blackbody experiment:
He concluded that light is emitted and absorbed by atoms in small quantities he called quanta.
We say energy is “quantized”
