tech e blog


Photo credit: The Meta

The first person to describe red blood cells was the young Dutch biologist Jan Swammerdam, who had used an early microscope in 1658 to study the blood of a frog. Unaware of this work, Anton van Leeuwenhoek provided another microscopic description in 1674, this time providing a more precise description of red blood cells, even approximating their size, "25,000 times smaller than a fine grain of sand". Here's what a single red blood cell looks like balanced on the head of a pin. Click here to view the first image in this week's WINS gallery. Continue reading for a viral video of a man who wrestles a grizzly bear in his own garden.








Photo Photo Photo Photo Photo Photo Photo Photo Photo Photo Photo Photo Photo Photo Photo Photo Photo Photo Photo Photo Photo Photo Photo Photo


This entry was posted on 02/02 9:00pm and is filed under Photography, Picture, Science .
You can leave a response.

Interesting Posts Around the Web