Scientific Style I

1
Scientific Style I

• The eddy diffusion coefficient is estimated as a
  function of altitude, separately for the Jovian
  troposphere and mesosphere. The growth-rate and
  motion of particles is estimated for various
  substances the water clouds are probably
  nucleated by NH?Cl, and sodium compounds are
  likely to be absent at and above the levels of
  the waters clouds. Complex organic molecules
  produced by the L? photolysis of methane may
  possibly be the absorbers in the lower mesosphere
  which account for the low reflectivity of Jupiter
  in the near-ultraviolet. The optical frequency
  chromospheres are localized at or just below the
  Jovian tropopause

2
Scientific Style II

• The planet Venus floats, serene and lovely, in
  the sky of Earth, a bright pin-point of
  yellowish-white light. Seen or photographed
  through a telescope, a featureless disc is
  discerned a vast unbroken and enigmatic cloud
  layer shields the surface from our view. No
  human eye has ever seen the ground of our nearest
  planetary neighbor.
• But we know a great deal about Venus. From
  radio telescope and space-vehicle observations,
  we know that the surface temperature is about 900
  degrees Fahrenheit. The atmospheric pressure at
  the surface of Venus is about ninety times that
  which we experience at the surface of the earth.
  Since the planets gravity is about as strong as
  the Earths, there are ninety times more
  molecules in the atmosphere of Venus as in the
  atmosphere of Earth. This dense atmosphere acts
  as a kind of insulating blanket, keeping the
  surface hot through the greenhouse effect and
  smoothing out temperature differences from place
  to place.

3
Scientific Styles

• Example I Carl Sagan and E. E. Salpeter,
  Particles, Environments, and Possible Ecologies
  in the Jovian Atmosphere, Astrophysical Journal
  Supplement
• Example II Carl Sagan, Venus is Hell, The
  Cosmic Connection