問題一覧
1
light consists of streamers emitted by the eye ()
Euclid
2
Light consisted of filaments or streamers coming from the eyes.
Plato
3
When these FILAMENTS came into CONTACT with an OBJECT, — was established
sight
4
light travels as TINY PARTICLES from a LUMINOUS OBJECT to the eye
Pythagoras
5
light is a form of TRANSVERSE WAVE motion emitted by luminous bodies
Christian Huygens
6
Proposed the Wave Theory of Light
Christian Huygens
7
light is a TINY PARTICLE called — emitted by a source that travels in a straight line
corpuscle
8
Corpuscular Theory of Light
Sir Isaac Newton
9
light can MEET EACH OTHER and undergoes —
diffraction, THOMAS YOUNG
10
light is an EM radiation that travels thru a vacuum
EM Theory of Light, James Clerk Maxwell
11
Existence of an EM WAVE within RADIO FREQUENCY that exhibit the SAME PROPERTIES OF LIGHT
Heinrich Hertz
12
introduced BLACKBODY radiation that was emitted in DISCRETE BUNDLES OF ENERGY called —
quanta, Max Planck
13
Quanta =
Photons
14
He proposed the Quantum Theory of Light
Max Planck
15
light is composed of BUNDLES OF WAVE called —
Albert Einstein, photons
16
every particle of matter is endowed with a — to guide it as it travels
wave, Louis Victor de Broglie
17
(Particle – Wave Duality)
Louis Victor De broglie
18
the range of frequencies of EM waves that stimulates the — of the eye
retina
19
The — is the region of the eye that allows that receives and is changed by electromagnetic radiation
retina
20
7.5 x 10⁻⁷ m (700 nm – red) to
3.8 x 10⁻⁷ m (400 nm – violet)
21
moves thru space with a velocity of c = 3 x 10⁸ m/s (—)
299, 792, 458 m/s
22
He measured the speed of light c = 3 x 10⁸ m/s (299, 792, 458 m/s) travels in a —
Albert Michelson straight line
23
deals with the behavior and properties of light
optics
24
Sources of Light
Luminous Objects Non - Luminous Objects
25
emit or send off their own light
luminous object
26
Luninous Objects
star, sun, light bulbs
27
cannot give their own light
non luminous object
28
non luminous objecrs use — light
reflected
29
non luminous obj
building,moon
30
Production of Light
ILFPCB Incandescence Luminescence Fluorescence Phosphorescence Chemiluminescence Bioluminescence
31
high temperature atoms vibrate give off energy in the form of EM radiation
incandescence
32
Nuclear reactions from the sun
incandescence
33
Wire filament inside the bulb
incandescence
34
Candle flame
incandescence
35
cold sources;
luminescence
36
only the ELECTRONS OF ATOMS are involved in the production of light
luminescence
37
Aurora Borealis
luminescence
38
release of light that lasts no more than 10 seconds
fluorescence
39
Minerals
fluorescence
40
release of light that is more than 10 seconds
phosphorescence
41
Glow in the Dark objects
Phosphorescence and chemiluminescence
42
production of light as a result of chemical reactions
chemiluminescence
43
production of light by organisms
bioluminescence
44
Bacteria Glowworms Fireflies
bioluminescence
45
1. — – allows the passage of light 2. — – allows only small amount 3.— – blocks light
Transparent Translucent Opaque
46
– region behind an opaque object from which light is blocked or cut off
Shadow
47
– darker region (—)
Umbra Total Solar Eclipse
48
– outer lighter region
Penumbra (Partial Solar Eclipse)