sources of lights Flashcards

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1
Q

what are the 2 types of light sources

A

1) natural
–> flyer flies

2) genetically engineered

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2
Q

luminous vs non-luminous definition?

A

luminous –> object produces light whether genetically engineered or natural

non-luminous –> does not produce light

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3
Q

3 rules of atoms within lights

A

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)

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4
Q

light is a form of?

A

energy

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5
Q

what is conduction?

A

the transfer of energy from particle to particle in SOLIDS

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6
Q

what is convection

A

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.

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7
Q

what is medium?

A

any physical substances through which energy can be transferred by.

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8
Q

The sun, what type of energy does it produced, what is it classified by?

A

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.

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