28 (number) - in Science

In Science

  • The atomic mass of silicon.
  • The atomic number of nickel.
  • The fourth magic number in physics.
  • The curing time of concrete is classically considered 28 days.
  • The average human menstrual cycle is 28 days although no link has been established with the nightlighting and the Moon.

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Famous quotes containing the word science:

    “Science is facts. Just as houses are made of stones, so is science made of facts. But a pile of stones is not a house and a collection of facts is not necessarily science.”
    —Jules Henri Poincare (1854–1912)

    “Science is built up with facts, as a house is with stones. But a collection of facts is no more a science than a heap of stones is a house.”
    —Jules Henri Poincare (1854–1912)