sources of lights Flashcards
what are the 2 types of light sources
1) natural
–> flyer flies
2) genetically engineered
luminous vs non-luminous definition?
luminous –> object produces light whether genetically engineered or natural
non-luminous –> does not produce light
3 rules of atoms within lights
1) atoms of materials must absorb energy
2) atoms must be considered in a “excited state” —> 3) atoms in the excited state release energy (often in the form of light)
light is a form of?
energy
what is conduction?
the transfer of energy from particle to particle in SOLIDS
what is convection
the transfer of heat by actual movement of warmed matter in LIQUIDS AND GASES
Convection is a process in which heat is transferred through a fluid (like air or water) by the movement of the fluid itself.
what is medium?
any physical substances through which energy can be transferred by.
The sun, what type of energy does it produced, what is it classified by?
Sun is a type of nuclear energy due to the fact that it goes through fusion (or fuse reactions) therefore producing an abundance of light.
–> solar energy is also another form of heat energy which in transferred by conduction or convection.