waves
作者:roger bra
1. photons
1.1. Level of engagement
1.2. small bundles of energy that make up light
1.3. energy that makes up light
1.4. flash light/white light
1.5. Expertise
2. vibrates
2.1. to move rabidly back and forth
2.1.1. somthing that moves in a back and forth motion
2.1.1.1. a phone