◆ SpookStack

Incident: 227 of these meteor showers norvally produce extremly bright green firebells such as thooe recently obeerved. For example, the observation mentioned by Mr Monnig (Inciient 231) appenred near the maximum of the Quadrantid shower of early Japusry, Mr McOullough's observation of August was mear the time of the Persid shower (Incident 230) ani the December observations (223, 2c3ea 224, 226, 227, MP fell in the interval covered by the Geuinid shower. This relationship it indicate an attempt to render the green fireballs less mY dy caus: them to appesr only when there is considerable meteoric activity. hb. As noted in an earlier commmic.tion the remarkably vivid green color renorted for wst of the Decerber fireballs is rarely observed in the case of gemine meteors, By leboratory test thie pemliar color seems to Le identical with ti st given off by copper salts in the blowpipé flame. If this identification is correct, the vavelengti of the radiation from the green fireballs io near >} 521B A. 1. The duration estimates of be' ween 2 and 3 aeconds reported for the green fireballe are considerebly longer than those (0.4 - 0.5 seconds) for the ordinary vieual meteors, but shorter than the dmretion estimates invar~ {ably reported in the cave of a gomiine meteorite fall (5 té 30 seconin or even longer). j. Hone of the green fireballs seex to have a train of sparks or a dust cloud following. This contrasts sharply with the dDehavior noted in ease of meteoric fireballs - partioularly those thst penetrate to the very low levels where the green fireball of December 12 wis observed. WTS: Inquiry at Holloman AF Base, Alemagordo, N. K., revealed that Tesearch work et night and om Sundays does not involve the use of any lighting device or flares suth as described in the various reports submitted.