:: To get only 1 trillion atoms in a sample of your pencil lead, you'd need to slice it up into 50, 000, 000, 000 pieces.
32.
After the animation was traced onto cels, the animators would trace it once more with blue and black pencil leads to give the waves a sculptured look.
33.
To avoid the need for anti-rejection drugs, scientists packed the calf cells into white plastic tubes about 2 inches long and about the width of a pencil lead.
34.
An advanced ratchet type has a mechanism that twists the pencil lead 6?counter-clockwise every time the lead is pressed on to the paper, to distribute wear evenly.
35.
As a young art student in the 1950s, I loved the differences in chalks and pencil leads, in pens cut one way for drawing and another way for lettering.
36.
The devices _ which look like No . 2 pencil leads _ expand to keep acid from moving up into the esophagus while allowing food to pass into the stomach.
37.
Another important feature is a larger clearance hole at the end of the cone allowing sections of the pencil lead which break away to be removed with only minor inconvenience.
38.
A slight decrease by 1 2 kHz when the crystal was overground was possible by marking the crystal face with a pencil lead, at the cost of a lowered Q.
39.
Research on shaped charge warheads has shown a hole the size of a large coin on the outside of a tank turret, but an inside hole the diameter of pencil lead.
40.
From tiny bone samples the equivalent of no more than a quarter of an inch of pencil lead, the scientists derived chemical signatures of the foods the Neanderthals ate in their lifetimes.
