A simple form of photo-electric photometer, using a Neon lamp to measure the current.

Míreanna comhchosúla

• On photometers made of solid paraffin, or other translucent substance.
  de réir: Joly, J.
  Foilsithe / Cruthaithe: (1885)
• Some measurements of the brightness of various parts of the sky by means of a rectifier photo-electric cell.
  de réir: Poole, H. H.
  Foilsithe / Cruthaithe: (1933)
• Experiments on the suitability of some rectifier photo cells for the measurement of daylight.
  de réir: Poole, H. H.
  Foilsithe / Cruthaithe: (1933)
• The uranyl oxalate method of daylight photometry and its photo-electric standardization.
  de réir: Atkins, W. R. G.
  Foilsithe / Cruthaithe: (1929)
• Photoelectric stellar photometry using an E. M. I. photomultiplier.
  de réir: Argue, A. N.
  Foilsithe / Cruthaithe: (1953)