principle of light

Question 1

which form of energy light is

Answer 1

electromagnetic energy

Question 2

how does the power line carry electromagnetic energy

Answer 2

inform of electricity

Question 3

how does electromagnetic spectrum work

Answer 3

it extends from wavelength of many meters to wavelength of submicroscopic size

Question 4

does color and frequency and light relate

Answer 4

yes e,g red light frequency is lower than blue light

Question 5

how is white light made

Answer 5

it is made by mixture of different frequency light

Question 6

where does light breaks in spectrum [rainbow] of colors

Answer 6

in prism

Question 7

what device breaks down light

Answer 7

spectrograph

Question 8

a part of electromagnetic spectrum that can be detected by human eye and at what spectrum

Answer 8

visible light,,,,,,, which is 7

Question 9

which color object absorbs all colors except its own color

Answer 9

red object

Question 10

which object absorbs all colors, and which reflects all

Answer 10

black and white

Question 11

what are characteristics that electromagnetic radiations share when contacting a biological tissue

Answer 11

they are; reflected
transmitted
refracted
absorbed

Question 12

what are the laws governing effect of electromagnetic

Answer 12

law of grotthus-draper and cosine law

Question 13

state law of grotthus-draper

Answer 13

if energy not absorbed must be transmitted to dipper tissue
greater amount absorbed, lesser transmitted, lesser penetration

Question 14

the smaller the angle btn propagating radiation and right angle, the less radiation reflected the greater the absorption

Answer 14

cosine law

Question 15

what is laser

Answer 15

it is the Light Amplification by the Stimulated Emission of Radiation

Question 16

what is the cold part of laser

Answer 16

red part from electromagnetic spectrum

Question 17

properties of laser

Answer 17

monochromatic [single wavelength and color
coherent [straight line]
polarized [concentrates its beam in different location]

Question 18

what does laser do

Answer 18

it penetrates the skin
it directs bio stimulative energy to body cells that promotes healing and pain relief
it optimizes the immune response of blood
has immunosuppressive and anti-inflammatory effect

Question 19

does laser cause anything when penetrating the skin

Answer 19

no heating effects
no side effects
no damage to skin

Question 20

what are the physiological effects of laser

Answer 20

wound healing
increase collagen production
increase macrophages activities
alters nerve conduction activities

Question 21

what does magnitude of tissue reaction depend on

Answer 21

depends on; output wavelength or frequency
density of power
duration of treatment
vascularity of target tissue

Question 22

which light is more selectively absorbed by specific proteins in cell membrane

Answer 22

infrared light

Question 23

how does hit work

Answer 23

=it is based on low level laser therapy
=with high power and right wavelength choice allow deep penetration
=through natural process of energy transfer
=can be used in 2 modes

Question 24

how does hit stimulate natural process of healing

Answer 24

bio stimulation and photomechanical

Question 25

what are the two modes where hit can be used

Answer 25

pulsed for analgesic treatment
continuous for bio stimulation, healing and recovery

Question 26

when is greater penetration achieved

Answer 26

longer wavelength and lower frequency

Question 27

what does dosage [measure of energy entering the body] depends on

Answer 27

output of laser
time of exposure
beam surface area

Question 28

how many major dosage variables are there and mention

Answer 28

4 which includes
power [avg and peak]
pulse duration
pulse frequency
fluency [pulse or continuous]

Question 29

what are the treatments techniques

Answer 29

gridding
scanning
wanding
point application [acupuncture]

Question 30

procedures for treatment

Answer 30

define location
select program
put on safety googles
start therapy
use spiral motion for analgesic
use scanning motion for biostimulation

Question 31

when to use laser

Answer 31

soft tissue injuries
fractures
osteoarthritis, rheumatoid
pain
wound, ulcers
acupuncture

Question 32

hen not to use laser

Answer 32

over eyes
cancerous growth
pregnancy
over cardiac region and vagus nerve
growth plates in kids
over and around thyroid gland and endocrine gland

Question 33

what to consider when applying laser

Answer 33

better underexposed than overexposed
avoid direct eye contact
may experience a syncope [loss of conscious]
if icing use before [enhance light penetration]
if heating use after

Question 34

what does photochemical reaction do

Answer 34

increase cellular metabolism
speed up cell repair
stimulates [lymphatic, immune and vascular]
accelerate normal healing process

Question 35

what does infrared do

Answer 35

reduce swelling, edema, inflammation and pain

Question 36

what are the benefits of light therapy

Answer 36

=relieve acute and chronic pain
=increase speed, quality and tensile strength and tissue repair
=increase blood supply
=stimulates immune system
=develop collagen and muscle tissue
etc.

Question 37

where IR is used

Answer 37

headaches
neurological
foot conditions
injuries
soft tissue injuries
chronic conditions

Question 38

what are the benefits of IR

Answer 38

drug free
chemical free
noninvasive
non-ablative
painless
safe
FDA approved
no side effects