Show DANGEROUS COLOR IS blut BLUE men who voyage above the earth prefer red for the covering of their balloons balloon in case you ever feel tempted to buy a balloon dont buy ablee one red ones are the best there la is a scientific reason why according to the researches Bear searches clies of M 31 reynaud Bey naud Is ia strongly attracted by the ultraviolet ultra violet rays raya from the mercury vapor lamp with a quartz tube which Is a powerful source of such rays this fact lias has a practical hearing bearing I 1 in n connection with balloon envelopes which are treated with aeronauts Aero are familiar with the discovery that the envelopes suffer buffer during ascensions and this is explained by the greater effect of ultraviolet ultra violet rays at high altitudes altitude experiment had already led to using yellow coloring matter on the envelopes envelope and red balloons are sometimes seen but never blue or violet 14 reynaud considers that red Is ig the best color to use as it not only absorbs the ultraviolet rays but also the blue rays and these last are likely to share in the bad action of the suna buias rays upon balloons |