super123

WHAT DO OUR EYES REALLY SEE? 10% But with all this We blink blinking, what 15,000 TIMES of our waking hours are spent blinking can our eyes every day ACTUALLY SEE COLOURS The number of 1TRILLION COLOURS the HUMAN EYE VS the number of ODORS the HUMAN NUSE can smell can see RED+YELLOW The 2 most IRRITATING COLOURS to the human eye 1IN 12 MEN In the world are affected by COLOUR BLINDNESS PIXELS AND PERCEPTIONS 13 TOMEGAPIMELS BMEGAPMELS MILLISECONDS VS ThelIME IT TAKES PROCESS AN IMAGE for the human eye to In the IPHONE 6 CAMERA The number the HUMAN EYE HAS 200 DEGREES HORIZONTALLY 390 TO750 NANOMETERS The total FIELD OF VIEW of a pair of HEALTHY HUMAN EYES, this decreases with age The MEASUREMENT of the human eyes PERCEPTION OF LIGHT at wavelengths DISTANCE 2.6 MIL YEARS NLIGHT FROM EARTH The DISTANCE OF THE HORIZON for the human eyes of a The ANDROMEDA GALAXY. THE FARTHEST OBJECT VISIBLE SIX FOOT TALL PERSON* with the naked human eye *WHY SO SPECIFIC? The distance of the horizon = the farthest point the eye can see before the Earth curves out beneath our view and depends on the height of the observer *WHY SO SPECIFIC? How far the human eye sees, depends on how many particles of light, or photons, a distant object emits The DISTANCE the human eyes could possibly 30 MILES AWAY see the FAINT GLIMMER OF A CANDLE FLAME* *NOTE Taking the absolute threshold, the brightness of the candle flame, and the way a glowing object dims according to the square of the distance, into account NEWBORN BABIES THE The IIME is takes for a What a WORLD NEWBORN UPSIDE BABY SEES DOWN until the brain NEWBORN 3 MONTHS BABY RECOGNISE FAMILIAR FACES learns to interpret the image correctly BLINDNESS NIGHT BLINDNESS Often occurs in people WHO LACK VITAMIN A IN THEIR DIET In the WORLD are 246 MILLION PEOPLE completely BLIND In the WURLD have LOW VISION AND FINALLY. The MOST AMAZING EYES IN THE WORLD are NOT HUMAN at all but belong to MANTIS SHRIMPS who have 12 photoreceptors compared to 3 in humans REFERENCES 1) gizmodo.com/what-is-the-resolution-of-the-human-eye-1541242269 2) www.vtc.vt.edu/education/community_engagement/kids_tech_eyes.pdf 3) www.colormatters.com/color-and-vision/color-and-vision-matters 4) www.dailymail.co.uk/sciencetech/article-2542583/Scientists-record-fastest-time-human-image-takes-just-13-milliseconds.html 5) io9.com/5926643/10-fundamental-limits-to-human-perception----and-how-they-shape-your-world 6) www.livescience.com/32111-how-far-away-is-the-horizon.html 7) listverse.com/2010/12/12/10-animals-with-incredible-eyes/ 8) www.engineeringtoolbox.com/particle-sizes-d_934.html 9) kidshealth.org/parent/pregnancy_newborn/senses/sense13m.html 10) health.howstuffworks.com/human-body/systems/eye/eyes-adjust-darkness.htm 11) www.npr.org/blogs/health/2014/03/20/291954994/never-mind-eyesight-your-nose-knows-much-more 12) www.medicaldaily.com/human-eye-can-see-infrared-light-plus-5-other-things-you-had-no-idea-eyes-can-do-312946 13) www.colourblindawareness.org/colour-blindness/ 14) www.iapb.org/vision-2020/global-facts 15) istverse.com/2010/12/12/10-animals-with-incredible-eyes Supersavers Opticians Qualified Opticians Serving The Public www.SUPERSAVERSOPTICIANSJE ------------------- --- DEGREES VERTICALLY 135