PIRA 6J11.00 PHYSIOLOGY

DCS #DEMONSTRATIONREFERENCEABSTRACT
6J11.00Physiology
6J11.10retinal fatigue - color discPIRA 1000
6J11.10retinal fatigue discOi-12A red light placed behind a rotating disc with a slot at the border of half black and half white appears different colors depending on the direction of rotation.
6J11.10retinal fatigue - color diskL-94A disk with a notch, half black, half white is spun in front of a red lamp. The lamp appears green or red depending on the direction that the disk spins.
6J11.11psychological colors6-2.8A black and white patterned disc appears colored when rotated.
6J11.20visual fatiguePIRA 1000
6J11.20visual fatigueL-61Stare at a bright spot and a complementary color appears when the spot is turned off.
6J11.22after image and judgement of size6-2.2The retinal fatigue image seems to change size.
6J11.30persistence of visionPIRA 1000
6J11.30persistence of vision6J11.30
6J11.30persistence of vision6-2.7A wheel with circles with phase shifted dots painted on the rim is spun in strobed light.
6J11.32colored fansAJP 43(1),113Paint a four bladed fan different colors and illuminate with a strobe.
6J11.33tubeless television6-2.9Wave a wand at the point a projected image is focused.
6J11.35integration of light pulsesOi-9If light intensity from a strobe that appears continuous at 3000 Hz is cut in half, it will appear continuous at about 1700 Hz.
6J11.36fluorescence of retinaL-60Shine an UV source with a visible filter toward the class and notice the luminous haze that covers the field of view.
6J11.37jarring the eyeOi-10Stamp your foot while watching a free running oscilloscope.
6J11.40subjectivity of colors6-2.4A red spot projected on the wall looks orange or brown if it is surrounded by white or black.
6J11.42Mach disk6-2.11A spinning disk appears to have light and dark rings where it should be uniform.
6J11.44relative black and white6-2.1A bright light shining on a black screen looks the same as a filtered light shining on a white screen.
6J11.46most sensitive to green lightOi-11A stick moved up and down in a projected spectrum will appear to bend at the green light area.
6J11.50impossible trianglesPIRA 1000
6J11.50impossible trianglesDisc 21-12An optical illusion that depends on viewing angle.
6J11.51the square that ain't thereTPT 28(8),562A cutout of a square in black paper has the illusion of being a white square on top of black paper.
6J11.52optical illusions6-2.3Compare the height to the width of a projected hat.
6J11.55perceptionAJP 42(7),531Many cases of optical perception are discussed along with some audio and misc. phenomena.
6J11.60depth perception - special caseAJP 33(12),1085Apparatus for demonstration of depth perception when due solely to the geometrical disparity of binocular vision.
6J11.70color blindnessPIRA 1000
6J11.70color blindnessL-62Use standard color-blindness slides or charts to test the students.

ReferenceDescription
M-1Sutton
Ma-1Freier & Anderson
M-1dHilton
8-2.8Meiners
1A12.01University of Minnesota Handbook
AJP 52(1),85American Journal of Physics
TPT 15(5),300The Physics Teacher
Disc 01-01The Video Encyclopedia of Physics Demonstrations

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