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ILLUMINATING FACTS ABOUT LIGHT AND VISION

Added on: 11th Jul 2016

 

CHERENKOV RADIATION IS WHAT HAPPENS WHEN A

PARTICLE TRAVELS THROUGH A MEDIUM (LIKE

WATER) FASTER THAN LIGHT WOULD. THIS

RADIATION GIVES OFF A BLUE GLOW THAT IS

CHARACTERISTIC OF UNDERWATER NUCLEAR

REACTORS

Cherenkov radiation is what happens when a particle travels through a medium (like water) faster than light would. This radiation gives off a blue glow that is characteristic of underwater nuclear reactors

 

 

ALTHOUGH RESEARCHERS ARE NOT ENTIRELY

SURE WHY, WHEN SOME AREAS IN SCOTLAND

AND JAPAN CHANGED THEIR STREET LIGHTS

FROM YELLOW TO BLUE THEY SAW A

DECREASE IN CRIME AND SUICIDE

Although researchers are not entirely sure why, when some areas in Scotland and Japan changed their street lights from yellow to blue they saw a decrease in crime and suicide

 

 

A JIFFY IS ACTUALLY A UNIT OF TIME (HOW LONG IT

TAKES LIGHT TO TRAVEL 1CM IN VACUUM)

A jiffy is actually an unit of time (how long it takes light to travel 1cm in vacuum)

 

 

BECAUSE OF A GENETIC QUIRK CALLED THE

PHOTIC SNEEZE REFLEX, ABOUT ONE THIRD OF THE

POPULATION WILL SNEEZE WHEN LOOKING AT THE SUN

Because of a genetic quirk called the photic sneeze reflex, about one third of the population will sneeze when looking at the sun

 

 

BETELGEUS IS A STAR ROUGHLY 450 LIGHT YEARS

AWAY THAT WILL EXPLODE WITHIN THE NEXT

300,000 YEARS. WHEN IT DOES, IT WILL LIGHT UP

THE SKY EVEN BRIGHTER THAN THE MOON. IN FACT,

IT WILL BE VISIBLE IN THE MIDDLE OF THE DAY

Betelgeus is a star roughly 450 light years away that will explode within the next 300,000 years. When it does, it will light up the sky even brighter than the moon. In fact, it will be visible in the middle of the day

 

 

SOME RESEARCHERS ARE TRYING TO CREATE

BIOLUMINESCENT TREES WITH THE SAME ENZYMES

FOUND IN JELLYFISH. THIS WOULD PROVIDE A

CLEAN SOURCE OF LIGHT FOR CITY STREETS AT NIGHT

Some researchers are trying to create bioluminescent trees with the same enzymes found in jellyfish. This would provide a clean source of light for city streets at night

 

 

IN 2001, LENE HAU, A PHYSICIST AT HARVARD,

MANAGED TO STOP A BEAM OF LIGHT IN ITS TRACKS

In 2001, Lene Hau, a physicist at Harvard, managed to stop a beam of light in its tracks

 

 

THE SAME PARTICLES THAT ARE RESPONSIBLE

FOR CREATING THE NORTHERN LIGHTS ALSO

CAUSE CLAPPING SOUNDS TO BE HEARD.

THESE SOUNDS HAVE LED TO NUMEROUS

FOLK TALES AND LEGENDS

The same particles that are responsible for creating the northern lights also cause clapping sounds to be heard. These sounds have led to numerous folk tales and legends

 


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