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Study Center

Answers from our experts to important scientific questions
Submit a question Our editors will select questions from those submitted and post their answers here.
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Physics:
Fluid mechanics

- When planning a wind farm, how are wind resources estimated? And if the average wind speed is known at 10 meters is there a general rule for estimating the wind speed at higher elevations (for example, 40 to 50 meters)?

Low temperature physics

- What are superconductors and how are they fabricated?

Nuclear physics

- Could we tell if left and right were reversed and we were in a looking-glass universe?

Solid state physics

- What are superconductors and how are they fabricated?

- What is giant magnetoresistance?


Sample questions from Q & A:

Bioscience | Biochemistry and molecular biology | Proteomics
Q: Why are neurons amitotic?

A: With the exception of the sensory neurons of the olfactory epithelium, vertebrate neurons in the adult brain are amitotic (do not divide), though new neurons are generated by glia in restricted brain regions. Exactly why this is true is not known but it is generally agreed that neurons cannot divide because they have switched off much of the machinery that allows cells to divide.

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Astronomy & Space Science | Astronomy - general
Q: Does the universe have a beginning or end?

A: Astronomers believe that the universe began about 14 billion years ago in a fiery explosion, called the "Big Bang." Over trillions of years, as the galaxies move even farther apart and the stars eventually run out of fuel and fade away into darkness, the universe will gradually become empty and cold.

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Agriculture, Forestry & Soils
Q: What is the Green Revolution?

A: The Green Revolution refers to a series of technologies in plant breeding that occurred in the late 1960s and gave rise to dramatic increases in the production of major food crops, principally rice, wheat, and maize (corn).

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