**Electronic/World Wide Web>**

**Blog:**Raymo , Chet (SEPTEMBER 21, 2011)

*, Imagine that*, Science Musings Blog, Retrieved on 2012-01-05

**Folksonomies:**mathematics dna

## Memes

05 JAN 2012

## Mathematical Proof that an Arm's Length of DNA is in Ever...

We know from X-ray diffraction studies that a strand of DNA is 1.5 nanometers (1.5 x 10 to the -9 meters) in radius. Assume a cylinder 1 meter long (the arm's length) with a radius of 1.5 nanometers and work out the volume (length x pi r-squared). A typical animal cell is about 8 micrometers (8 x 10 to the -6 meters) in radius. Assume a spherical cell and calculate the volume (4/3 pi r-cubed). Do it yourself. You will see that the DNA fits easily inside the cell, with plenty of room for all o...Chet Raymo does the math to demonstrate this seemingly impossible scientific facts.

### Parent Reference

**Science Musings Blog**

**Electronic/World Wide Web>**

**Blog:**Raymo , Chet (2004 - 2011)

*, Science Musings Blog*, Retrieved on 2011-11-24

**Folksonomies:**science spirituality