On a Remarkable Case of Uneven Distribution of Light in a Diffraction Grating Spectrum

When the light is incident on the opposite side of the normal from the spectrum we find the red and orange extremely brilliant up t o a certain wave-length, where the intensity suddenly drops almost to zero, the fall occurring, as I have said, within a range not greater than the distance between the D lines

R W Wood

2002

Scholarcy highlights

  • This article has been downloaded from IOPscience
  • Pointed ont that it is liecessery to consider both the matter-vdume and the meta-volume of bodies to get at the explanation of physical phenomena
  • GARDINERdrew attention to the necessity of heating the powdered si1ic:i to red heat in order to get rid of moisture, If possible, the silica should be heated in the actual tube and sealed up whilst hot
  • S, WAIPPLEsaid that Dr Clobbett had shown that results very similar to the Pouillet effect could be obtained with an ordinary clinical thermometer and a piece of muslin
  • The few photographs which I have taken and which are reproduced, were made on some old orthochromatic plates, without any especial appliances, the plates being applied to the end of the spectrometer tube, while the slit was illuminated with a Nernst lamp, which makes the best source of light possible when a continuous spectrum is required

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