« previous next »
« previous next »
 

Did you know?

The horizontal fraction bar was introduced by the Arabs.

Did you know?

In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

Spinal changes caused by osteoporosis. Spinal changes caused by osteoporosis.
The most commonly used socket drive sizes include 1/4, 3/8, and 1/2 inch drives. The most commonly used socket drive sizes include 1/4, 3/8, and 1/2 inch drives.
Spinal changes caused by osteoporosis. Spinal changes caused by osteoporosis.
(a) Acute myelocytic leukemia: The tumor cells are of myeloid rather than lymphoid lineage. (b) ... (a) Acute myelocytic leukemia: The tumor cells are of myeloid rather than lymphoid lineage. (b) ...
The cell wall of a Gram-positive bacterium, S. aureus The cell wall of a Gram-positive bacterium, S. aureus
Cutaway Drawing of Tholos, The So-called Treasury of Atreus Cutaway Drawing of Tholos, The So-called Treasury of Atreus
Video: Atrial natriuretic peptide (vasodilation) & Aldosterone

For a complete list of videos, visit our video library