light and electricity

Light

an electromagnetic wave

EM wave

produced from alternating electric and magnetic fields that can travel thru a medium

Visible light

comprises of a

tiny region of the

EM spectrum

400nm to 700nm

range of the EM that we can see

Violet

highest frequency lowest wavelength

Red

highest wavelength, lowest frequency

Incandescent Lights

credited to Thomas Edison, incubation

Fluorescent Lights

contains a mercury gas that gets excited when there is electric current, contains phosphor, energy efficient

Neon lights

consist of a sealed, electrified glass tube filled with neon glasses

red light

pure neon emits

green light

krypton emits

Georges Claude

inventor of neon lights

Sodium Vapor lights

Low Pressure Sodium (LPS) glows with a monochromatic yellow light, contains xenon, mercury, and sodium that emit bluish light

Tungsten Halogen Lights

advanced form of incandescent lamps contains halogen

Temperature, T

a quantity that measures how hot or cold an object is

T

proportional to kinetic energy, KE

Heat, Q

energy in transit where a hot t to a low t is

Celcius

as the value assigned to the

freezing point, FP, of water;

100C

Boiling point of water

32F

Fp of water in farenheit

212C

Boiling point of water in F

0

what is the absoltue temperature

273.15

1 celcius to kelvin

negative

electron

positive

proton

Fundamental Law of Electrostatics

says that like

charges repel, and opposite charges attract.

Coulomb

unit of charge

q

charge is denoted by

Electrons

only ___ can be transferred to one another

Cation

positive ion, e is smaller than p

Anion

negative ion, e bigger than p

Law of Conservation of Change

if there is a loss or gain of electron, the net charge is the same

Current

movement of electric charges, ratio of the amount of charge (q) per unit

I

current is denoted by

Ampere A

unit of current

I=q/t

Formula for current

Electric potential energy

A charged object has

v=eq

unit of voltage

Resistance

makes it difficult for current to pass.

ohms

unit of resistance

Resistors

electrical

components that have two

terminals that provide

resistance in a circuit.

Recurving

tracking west-northwesterly

path

straight moving

westerly path between latitudes