front 1 c'est quoi la lumiere? | back 1 une forme d'energie - lumineuse |
front 2 types de lumiere | back 2 phosphorescence fluorescence bioluminescence chimioluminescence incandescence |
front 3 fluorescnece | back 3 absorbe les particules uv et emet sous forme de lumiere |
front 4 bioluminescence | back 4 light that comes from living things |
front 5 chimioluminescence | back 5 lumiere emi a cause d'une reaction chimique |
front 6 incandescence | back 6 light emitted because of heat |
front 7 phosphorescence | back 7 absorbs the light and then emits it later (like the paint on car buttons) |
front 8 sources de lumiere | back 8 chimique naturel artificiel |
front 9 things that use light | back 9 microscope loupes lentilles portatifs |
front 10 proprietes de lumiere | back 10 light travels in a straight line light travels in waves light refracts light reflects |
front 11 electromagnetic spectrum | back 11 gamma rays x rays uv rays visible light infrared microwaves radio waves |
front 12 what happens to light when it hits something opaque | back 12 the rays bounce off (some get absorbed) |
front 13 what happens to light when it hits something translucid | back 13 some go through, some bounce off |
front 14 what happens when light hits something transparent | back 14 the rays go directly through it |
front 15 parts of a reflection | back 15 normale, angle d'incidence, angle de reflexion, rayon d'incidence, rayon de reflexion |
front 16 concave mirror | back 16 curved inwards, makes the light rays converge |
front 17 convex mirror | back 17 curved outwards, makes the light rays diverge |
front 18 refraction | back 18 the bending of light due to change in density |
front 19 more dense substance to less dense substance | back 19 light refracts away from the normale |
front 20 less dense substance to more dense substance | back 20 light refracts towards the normal |
front 21 mirages | back 21 since light refracts, changes in density can make the light bend so you think something is closer |
front 22 concave lens | back 22 curved inwards, makes the rays diverge |
front 23 convex lens | back 23 curved outwards, makes the rays converge |
front 24 nearsightedness / myopia | back 24 concave LENS |
front 25 farsightedness / hypermyopia | back 25 convex LENS |
front 26 lens/mirrors: microscopes | back 26 lenses |
front 27 lens/mirror: binoculars | back 27 prisms/lenses |
front 28 lens/mirror: refracting telescopes | back 28 lenses |
front 29 lens/mirror: reflecting telescopes | back 29 mirrors |
front 30 how the eye works | back 30 light enters the eye through the cornea and pupil, reaching the lens which is bent by the muscle ciliaire. the light is then refracted to converge at the retina, where batonnets and cones respond to the light level and colours. the invformation then travels to the brain by the optic nerve. the brain flips the image it receives, as when the light converges at the retina it also flips the image. |
front 31 circular pupil eyes | back 31 depth perception, but less field of vision - predator |
front 32 horizontal pupil eyes | back 32 this prioritizes vertical field of vision - predator |
front 33 vertical pupil eyes | back 33 prioritizes depth perception close to the ground - predator |
front 34 horizontal pupil eyes (not curtain like) | back 34 prioritizes a large field of vision |
front 35 why can birds see tiny things far away? | back 35 their muscle ciliaire can bend their lens so much to focus on things very far away |
front 36 how does a laser work? | back 36 rays of light reflect inside the laser to give it more energy, and then exit through one side that is very slightly translucid (2%) to make a concentrated beam of light |
front 37 laser eye surgery steps | back 37 1 - peel off the top part of your eye 2 - shave off a small piece of your cornea ( changes the shape ) 3 - changes the focus of your eye |
front 38 nocturnal imagery | back 38 intensifies the light that it absorbs |
front 39 infrared imagery | back 39 detects heat, and then makes an image out of information they get from each point of the area |