Someone asked me on twitter which corresponded to the protection factors found in sunscreens, here is the answer.
The sunscreen factores ensures a level of protection against UVB rays (those who tan). The protection offered by an index will be identical whatever the product, its form or its country of marketing. Can be found next to these indices measure for UVA (those that give cancer) but no regulations oblige today.
The calculation is based on international recommendations Colipa. It is spread back portion of volunteer testers 2mg / cm ² of sunscreen, to expose them to a constant source of UVB during a specified period and increasing gradually to measure and test and measurement 24H later redness the epidermis. The sun protection factor equal to the ratio of the time it takes for a tester to blush in a protected area on the time it takes to get a sunburn on unprotected area.
For example, if a tester blushed after 2 hours (120 minutes) on a protected area when he did need 10 minutes to blush on an area not protected, the protection factor will be 12 (120 / 10 = 12). Such a tester who takes a sunburn in 5 minutes without protection, so he needs 3H (180 minutes) to take on a protected area, the index is 36 (180 / 5 = 36).
Finally, the IPS are indications that because all people are equal before the misdeeds of UVB, and pale skin will naturally protect themselves better than matte skin, but somehow as winter approaches, opt instead for a tube of self-tanner:)
A Bic pen is capable of scribbling 2 to 3 kilometers worth of doodles before giving out.
The rumor/caveat: French people allot the most minimal of efforts to personal hygiene and thus smell icky.
, attractive) H2O molecules (yes, I just wrote that sticky = attractive). This is why they are called hydrophobic (‘water hating’). The oil, being less dense than water, then proceeds to float to the top of the water and congregate with its equally less dense and unattractive comrades, forming a visible distinction in your little experimental glass.
, which also encompasses plants such as garlic and chives. On cutting these vegetables open, two substances are liberated: sulfoxides, which are volatile organic molecules responsible for the flavors of the onion; and the allinases, which are enzymes, as the suffix suggests.
al in the world is the sloth!
ng to historical discoveries, coffee first appeared in Ethiopia (more precisely, in the province of Kaffa) in the east of Africa. It seems that the locals of this region have been getting jittery with it since about the 8th century. These Ethiopians then summarily introduced the delightful caffeinated concoction to Yemen, but it wasn’t imported to the Orient until the 15th century. The city of Moka in Yemen, situated on the ideal trading spot alongside the Red Sea, transformed into the first important coffee port by the mid 15th century.
“Oh please, rain is simply water, which has absolutely no odor to speak of”, you say. Indeed you’re right! But it’s not the rain that smells rainy, but rather the soil; more precisely, that beloved characteristic smell is attributed to an organic compound named geosmin, produced by the bacteria Streptomyces coelicolor (how I adore biology and its poetic monikers!).
Ear piercing: The story goes that sailors would don a golden earing so that they might sell it to finance their rescue in the event of a shipwreck. It’s also said that holes in the ear stimulate an acupunctural point thought to ameliorate vision, but this hasn’t been verified.