Humans Can See Polarized Light Much Better Than Other Creatures

Scientists have revealed that humans can actually see a phenomenon called 'polarized light' better than most other creatures.

Scientists hope that findings of the study could pave way for development of a device that could help them detect the risk of Age-related Macular degeneration.

Scientists at University of Bristol said it is known that there are two properties of light - color and brightness. However, the third property is called polarization, which tells us the orientation in which the light waves are oscillating.

If you are holding one end of the rope with the other tied up and if you move the rope side to side, it means that the wave that is generated is horizontally polarized. But if you do the same thing up and down, it generates a wave this is vertically polarized.

Insects such as bees and ants use this polarization pattern in the sky for their navigation needs. "Haidinger's brushes usually fade in a couple of seconds as your brain processes them out. This is one of the reasons that few people notice them day to day, and why they have previously been fairly difficult to study", said Dr Juliette McGregor, another lead author of study.

Researcher for the study developed special filters to vary the percentage of polarized light from 0 to 100 % and tested the minimum percentage polarization at which Haidinger's brushes could be detected.

They found that among 24 people, the average polarization sensitivity threshold was 56%. Some people were able to see Haidinger's brushes when the light was less than 25 % polarized.

By using LCD screens researchers were also able to make the first measurements of the dynamics of Haidinger's brushes, confirming the prediction that some individuals would perceive a 'flip-flop' effect, as the polarization angle is rotated.


AustrianTribune Specials

According to reports, the Newport-Inglewood fault is deeper and a natural helium leak in Southern California revealed that. A direct line has been found reaching Earth's mantle from its surface.

It has been found by researchers that there...

Most Popular

A recent study showed that bigger is no more considered...

A journal PLOS One-published study has provided clues on...

For the last 70,000 years, a supervolcano present...

Scientists have revealed that humans can actually see a...

Automotive News

  • 2015 Volvo S60 is more powerful and offers fuel savings
  • Ford comes to Silicon Valley with its new Research and Innovation Center
  • BMW, VW team up to install 100 high-speed charging stations in 2015

UK News

  • New “flying doctors” scheme to be launched in Wales
  • Britain in Search for Its National Bird
  • Woman finds deadly spiders on banana from supermarket
  • Hospital must seek compensation to deal with high number of patients
  • Solar Eclipse over Ashbourne Later this Month