Electrostatic & Energy ch.3 Flashcards Preview

Radiography > Electrostatic & Energy ch.3 > Flashcards

Flashcards in Electrostatic & Energy ch.3 Deck (17)
Loading flashcards...
1
Q

what travels in a straight line

A

waves

2
Q

the distance between individual crests and troughs

A

wavelength

3
Q

the number of times that wave happens

A

frequency

4
Q

long distance and low frequency =

A

little energy

5
Q

short wavelength =

A

high frequency and a lot of energy

6
Q

wilhelm roentgen

A

discovered xrays in 1896

7
Q

electron being added/subtracted from object

A

electrostatics

8
Q

object is electrified in what 3 ways

A

contact, friction, induction

9
Q

conductors

A

water and copper

10
Q

insulators

A

rubber, plastic, glass

11
Q

electrical current as package or quantity of electrons flowing within a period of time

A

amp

12
Q

used in radiology to regulate a number of electons used to xray photons

A

milliamperes

13
Q

force that draws electrons from an area in excess to an area deficient in electrons

A

electromotive force

14
Q

electromotive force measures through ___

A

volt

15
Q

potential difference

A

measurement of full vs measurement of empty

16
Q

resistance

A

opposite of current flow.

17
Q

decrease amount of electrical current. important to keep energy level

A

resistance