Another option for hormonal contraceptives is the extended-cycle pill, such as Seasonale, which was the first one to be approved. Seasonale contains the same hormones as other birth control pills, but the hormones are taken in a longer cycle.
The best glow in the dark powders are based upon strontium aluminate. The older weaker glow in the dark powders were made with zinc sulfide. All sulfide based powders have a sulfurous odor and are not pleasant to work with.reen glow in the dark powder is the brightest and offers the longest after glow of all glow in the dark phosphorescent colors. Itâs most commonly used in safety applications such as exit signs but is very well suited to any application that requires a bright glow and long after glow. It is perfect for star murals.
Strontium aluminate phosphors produce green and aqua hues, where green gives the highest brightness and aqua the longest glow time.The excitation wavelengths for strontium aluminate range from 200 to 450 nm.The wavelength for its green formulation is 520 nm, its blue-green version emits at 505 nm, and the blue one emits at 490 nm.trontium aluminate phosphor is fired at about 1250 Â°C. Subjecting it to temperatures above 1090 Â°C is likely to cause loss of its phosphorescent properties.