ScienceIQ.com

What Is Sickle Cell Anemia?

Sickle cell anemia is an inherited blood disease. That means you are born with it and it lasts a lifetime. Sickle cell anemia affects the red blood cells. Normal red blood cells are smooth and round like doughnuts. They move easily through blood vessels to carry oxygen to all parts of the body. In sickle cell anemia, the red blood cells become ...

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WhatIsSickleCellAnemia
Chemistry

What Is A Half-life?

When isotopes break down, or decay, they usually split apart into two smaller atoms. Excess neutrons and protons are often sent flying off through space, taking the excess energy of the atoms with ... Continue reading

WhatIsAHalflife
Mathematics

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 ... Continue reading

Candela
Astronomy

Will the Sun Shine Forever?

The Sun is a huge nuclear furnace. It operates by converting hydrogen into helium. In this process, which is called nuclear fusion, it loses mass and produces energy according to Einstein's famous ... Continue reading

SunLifetime
Biology

What Are Blood Types, and Why Are They Important?

If your medical report reads A, Rh+, M, s, P1, Lua, K+, Kp(a-b+), Le(a-b+). Fy(a+), Jk(a+b+), don't run for a foreign language dictionary. The letters aren't Greek. They are simply the names given to ... Continue reading

BloodTypes

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.