It looks like you're using an Ad Blocker.
Please white-list or disable AboveTopSecret.com in your ad-blocking tool.
Thank you.
Some features of ATS will be disabled while you continue to use an ad-blocker.
Originally posted by SuperSecretSquirrel
reply to post by SUMDUMONKEY
Thanks Sudo, I totally forgot about the most obvious point! When the pilots of these jets land, they take off the mask that has providing them with adequate oxygen and walk across the flight line to the hangar or wherever they are going and breath the air in all of its magnificent glory.
Depending on a plane�s altitude, and the temperature and humidity of the atmosphere, contrails may vary in their thickness, extent and duration. The nature and persistence of jet contrails can be used to predict the weather. A thin, short-lived contrail indicates low-humidity air at high altitude, a sign of fair weather, whereas a thick, long-lasting contrail reflects humid air at high altitudes and can be an early indicator of a storm.
Originally posted by SuperSecretSquirrel
reply to post by YouAreDreaming
Ok, nice video but did you notice that most of the trails were basically in the same direction? This is because commercial airlines don't just fly wherever they want, they follow strict flight corridors. Occasionally they intersect but for them most part, they are linear.
long-lasting contrail reflects humid air at high altitudes and can be an early indicator of a storm.
This invention is a process for absorbing ultraviolet radiation in the atmosphere by dispersing melanin, its analogs, or derivatives into the atmosphere. By appropriate choice of melanin composition, size of melanin dispersoids, and their concentration, the melanin will absorb some quantity of ultraviolet radiation and thereby lessen its overall effect on the critters who would normally absorb such radiation.
This application is a continuation of application Ser. No. 7/878,716, filed May 4, 1992, now abandoned. Claims We claim as our invention: 1. A method for absorbing ultraviolet radiation in the atmosphere comprising the step of introducing a dispersed composition comprising melanins into the path of the ultraviolet radiation. 2. The method of claim 1 where the dispersed composition comprises neat melanins. 3. The method of claim 1 where the dispersed composition comprises melanin solution. 4. The method of claim 1 where the dispersed composition comprises a melanin suspension. 5. The method of claim 1 where the dispersed composition comprises particles containing melanin. 6. The method of claim 5 where the dispersed composition comprises a polymeric particle comprising melanin. 7. The method of claim 1 where the dispersed composition comprises a particle size of 0.5-100 microns. 8. The method of claim 6 where the polymeric particles are polymeric beads having an average diameter between about 0.5 microns to 50 microns. 9. The method of claim 8 where the polymeric beads have an average diameter in the range of 0.5 microns to 10 microns. 10. The method of claim 6 where the polymeric particles contain melanin-comprised methylmethacrylate ethyleneglycol dimethacrylate copolymer. 11. The method of claim 1 where the melanin is produced from melanin precursors selected from the group of L-dopa, tyrosine, tryptophan, and cysteine. 12. The method of claim 11 where the melanin precursor is L-dopa. 13. The method of claim 1 where the ultraviolet radiation has a wavelength of 250-400 nanometers. 14. The method of claim 13 where the wavelength of the ultraviolet radiation is 320-400 nanometers.