(Encyclopedia) spinal puncture, surgical penetration of the spinal canal by a hollow needle introduced between two of the lumbar vertebrae. The arrangement permits injection of antibiotics or…
Try to imagine life without antibiotics. We wouldn’t live nearly as long as we do without them. Here’s a look at some discoveries that have changed the world. It’s impossible to rank their…
PENICILLIN HEALTH EDUCATION PREVENTATIVE MEDICINE DIAGNOSIS TREATMENT FIND OUT MORE
Medicine is the practice of dealing with diseases and injuries to the body. One of its most important…
SULPHUR CRYSTALSMAKING SULPHURIC ACIDTRANSPORTING SULPHURIC ACIDSEMI-METALSHALOGENNOBLE GASESFIND OUT MOREThe metal elements in the periodic table have easily defined properties. The remaining…
The Ten Most Wanted FAQ by David Johnson 1. Have any women ever appeared on the list? Answer: Yes. Eight women have appeared on the list, starting 1968, with Ruth Eisemann-Schier. She was charged…
Why don't the oceans freeze? In the Arctic and Antarctic, they do. The ice cap at the North Pole is entirely over ocean; on the other hand, the ice is only a few feet deep. Oceans don't freeze…
Speed is the measure of motion. You can find it by dividing the distance covered by the time it takes to travel that distance.Speed of Light If a star is 10 light-years away, it is about 60…
HOW DOES HEAT FLOW? WHAT ARE THE THREE TYPES OF HEAT TRANSFER? CAN WE SEE HEAT? TEMPERATURETHERMOMETERSTHERMAL INSULATORSFIND OUT MOREEverything around us contains heat. Heat is a form of energy—…
(Encyclopedia) observatory, scientific facility especially equipped to detect and record naturally occurring scientific phenomena. Although geological and meteorological observatories exist, the term…
By Mike Morrison, John Gettings, and Gerry Brown RAY BOURQUE Bourque didn't need much. He had a family, money, and a solid gold hall-of-fame career. But the one thing…
