Zobrazeno 1 - 3
of 3
pro vyhledávání: '"Vernon E. MacRoberts"'
Publikováno v:
IEEE Spectrum. 6:89-94
Nature photography was almost the first application of the electronic flash system of lighting when it became commonly available.1 Although these first units used paper capacitors charged to high voltages and discharging at microsecond rates, later `
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1934f3c716b84607fdd4effbac0ef572
https://doi.org/10.1109/mspec.1969.5213903
https://doi.org/10.1109/mspec.1969.5213903
Publikováno v:
Review of Scientific Instruments. 36:1760-1763
An electronic double flash unit has been constructed to measure photographically average linear velocity of blood flow in the bulbar conjunctival vessels of the human eye. Two exposures on the same photograph separated by a predetermined time delay (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e96316f4d38a82aeba900746d07598e
https://doi.org/10.1063/1.1719459
https://doi.org/10.1063/1.1719459
Publikováno v:
Review of Scientific Instruments. 52:624-625
A mechanically‐improved spark gap, in an open groove along a glass or quartz rod, is described in this paper. The output is about 0.5 cps with a flash duration of less than a microsecond. The effective source size is limited by a 1.6‐mm diam. hol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6d493db19f3eeb420202bde61b73499
https://doi.org/10.1063/1.1136624
https://doi.org/10.1063/1.1136624