ScienceIQ.com

Unit Of Luminous Intensity (candela)

Originally, each country had its own, and rather poorly reproducible, unit of luminous intensity; it was necessary to wait until 1909 to see a beginning of unification on the international level, when the national laboratories of the United States of America, France, and Great Britain decided to adopt the international candle represented by carbon ...

Continue reading...

Candela
Medicine

What Is Narcolepsy?

Narcolepsy is a sleep disorder than affects about 1 of every 2000 people worldwide. It usually starts in the teens or twenties, but it may begin in childhood. People who have it fall suddenly and ... Continue reading

WhatIsNarcolepsy
Biology

Throw Out Your Thermometer

If you're out camping, and you've left your favorite thermometer at home, how can you figure out the temperature? Not the most earth-shaking problem, we admit, but there is an all natural way to find ... Continue reading

Thermometer
Geology

The Mineral Chalcedony

Chalcedony is a catch all term that includes many well known varieties of cryptocrystalline quartz gemstones. They are found in all 50 States, in many colors and color combinations, and in ... Continue reading

TheMineralChalcedony
Astronomy

Galaxy Cluster RDCS 1252.9-2927

A color composite image of the galaxy cluster RDCS 1252.9-2927 shows the X-ray (purple) light from 70-million-degree Celsius gas in the cluster, and the optical (red, yellow and green) light from the ... Continue reading

GalaxyClusterRDCS125292927

GP-B: More Than Just a Pretty Face

GPBMoreThanJustaPrettyFaceQuestions about the ways space, time, light and gravity relate to each other have been asked for eons. Theories have been offered, yet many puzzles remain to be solved. No spacecraft ever built has required such extreme demands on technology and testing. Scientists and engineers have worked tirelessly for more than 40 years developing new technologies just for this mission. Gravity Probe B is

Also, Gravity Probe B sports the world's most spherical gyroscopes. Measuring the curvature (geodetic effect) and

GP-B was built in a class 10 clean room, so the entire craft wouldn't be subject to particles larger than a single micron that could disturb the delicate components. If Albert Einstein were alive today he'd be relaxing in his easy chair, pipe in hand, very calmly awaiting the results of this historic mission and probaby marveling at the technology it takes to probe his 89 year-old theory.