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Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

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There are 20 feet of blood vessels in each square inch of human skin.

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Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

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Amphetamine poisoning can cause intravascular coagulation, circulatory collapse, rhabdomyolysis, ischemic colitis, acute psychosis, hyperthermia, respiratory distress syndrome, and pericarditis.

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Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Vertical structuring of the oceans is associated with substantial variation in light and temperature Vertical structuring of the oceans is associated with substantial variation in light and temperature
The effective temperature, or black body temperature, of the Sun (5777 K) is the temperature a black The effective temperature, or black body temperature, of the Sun (5777 K) is the temperature a black
Changes in Synaptic Density From Birth to Age 2 Synaptic connections increase throughout the first Changes in Synaptic Density From Birth to Age 2 Synaptic connections increase throughout the first
The medical assistant holds the position of the thermometer while the temperature is being obtained. The medical assistant holds the position of the thermometer while the temperature is being obtained.
The path of the conveyor is complex and affected by deep ocean topography The path of the conveyor is complex and affected by deep ocean topography
PCR screens of Navajo affected with albinism (N4 and N5) and the parents of N4 (N2 and N3) PCR screens of Navajo affected with albinism (N4 and N5) and the parents of N4 (N2 and N3)
Video: Embryonic development - Week 3

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