今日のTED！日焼け止めのことよく知らんかったからおもろかった！
*The rays are separated by their different wave length, such as UVA and UVB.
*UVB rays cause the skin to burn.
*The role of UVA rays is less well understood and appears to have an effect on our tanning response, carcinogenesis and aging.
*There are two types of ｓunscreen, pyisical and chemical blockers.
* Pyisical blockers reflect sunrays by acting as a pysical barrier.
*Chemical blockers absorb the sunrays. They deteriorate more quickly than pysical sunscrees because their ablitity to absorb the Sun deminishes.
＊SPF is a measure of the protection that the sunscreen will provide from UVB rays before one begins to burn to determine their sunburn protection factor.
*Children under the age of six months should have alomost no sun exposure.
*Car windows block UVB, the burn rays but not UVA, the aging rays.
*When chosing a sunscreen, we should look for broad spectra, SPF of at least 30, and water resistant.
tanning response： 日焼け
carcinogenesis： 発がん
deteriorate: 劣化する
deminishes： 能力が落ちる
日焼け止め塗ろ。
