I. On a fourth state of matter, in a letter to the Secretary. By W. Crookes, F. R. S
1880 ◽
Vol 30
(200-205)
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pp. 469-472
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Dear Professor Stokes, In introducing the discussion on Mr. Spottiswoode and Mr. Moulton’s paper on the “ Sensitive State of Vacuum Discharges,” at the meeting of the Royal Society on April 15th, Dr. De la Rue, who occupied the chair, good-naturedly challenged me to substantiate my statement that there is such a thing as a fourth or ultra-gaseous state of matter. I had no time then to enter fully into the subject; nor was I prepared, on the spur of the moment, to marshal all the facts and reasons which have led me to this conclusion. But as I find that many other scientific men besides Dr. De la Rue are in doubt as to whether matter has been show to exist in a state beyond that of gas, I will now endeavour to substantiate my position.
2010 ◽
Vol 64
(3)
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pp. 261-270
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1881 ◽
Vol 32
(212-215)
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pp. 407-408
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1993 ◽
Vol 342
(1299)
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pp. 4-5
1832 ◽
Vol 122
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pp. 539-574
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1877 ◽
Vol 167
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pp. 117-135
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1857 ◽
Vol 8
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pp. 158-165
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2021 ◽
Vol ahead-of-print
(ahead-of-print)
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