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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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More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

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Though newer “smart” infusion pumps are increasingly becoming more sophisticated, they cannot prevent all programming and administration errors. Health care professionals that use smart infusion pumps must still practice the rights of medication administration and have other professionals double-check all high-risk infusions.

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Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.

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Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Slovakian Rough-haired Pointer Slovakian Rough-haired Pointer
Controlled Experiments Manipulate a Variable Controlled Experiments Manipulate a Variable
Negative feedback control of a regulated variable. Negative feedback control of a regulated variable.
A cutaway view of a typical variable fuel sensor. A cutaway view of a typical variable fuel sensor.
The schematic of a variable valve timing control circuit, showing that battery power (+) is being ... The schematic of a variable valve timing control circuit, showing that battery power (+) is being ...
Variable expressivity as shown in flies homozygous for the eyeless mutation in Drosophila Variable expressivity as shown in flies homozygous for the eyeless mutation in Drosophila
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