The Science Library

Finding and linking to the amazing things in this Universe

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From Chandra - “Gravitational lensing by an intervening elliptical galaxy has created four different images of the quasar, shown by the Chandra data in pink. Such lensing, first predicted by Einstein, offers a rare opportunity to study regions close to the black hole in distant quasars, by acting as a natural telescope and magnifying the light from these sources.”

From Chandra - “Gravitational lensing by an intervening elliptical galaxy has created four different images of the quasar, shown by the Chandra data in pink. Such lensing, first predicted by Einstein, offers a rare opportunity to study regions close to the black hole in distant quasars, by acting as a natural telescope and magnifying the light from these sources.”

Filed under astronomy black-holes cosmology gravitational-lensing

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This is dimethylsulfoxide:

Diethyl Ether C4H10O

  • Appearance: Colorless liquid
  • Molar Mass: 74.12 g/mol
  • Density: 0.7132 g/cm3
  • Melting Point: -116.4°C
  • Boiling Point: 34.6°C
  • pKa: -3.5 (conjugate acid)

Diethyl ether, also known as just “Ether”, is a flammable, volatile liquid used primarily as a solvent. It also has uses as a general anesthetic with narcotic properties but it’s use has been discontinued for safer, halogenated anesthetics. It has a major drawback of causing psychoactive addiction, called etheromania. 

(via centralscience)

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Cool gravity visualization

flummery:

jkottke:

Using a large piece of spandex (representing spacetime) and some balls and marbles (representing masses), a high school science teacher explains how gravity works.

The bits about how the planets all orbit in the same direction and the demo of the Earth/Moon orbit are really neat. And you can stop watching around the 7-minute mark…the demos end around then.

This is SOOOOOO COOOOOOL!