페트병에 담긴 물 성분을 살펴봤다. ● 01 WATER - 칼슘과 마그네슘 이 비율 무엇? 생수? ... 함량이 상대적으로 낮다. 천연광천수(natural mineral water)라는 단어도 먹는샘물 제품에서 눈에 많이 띈다. 제품에 따라 ‘천연(natural)’만 표기돼 있거나, ‘광천수(mineral water)’만 표기된 제품도 있다. 이건 ...
같은 생수라도 물의 태생은 모두 다르다. 생수의 종류는 크게 광천수(mineral water)와 용천수(spring water), 정제수(purified water)로 나눈다.광천수는 땅속 깊은 곳에서 끌어올린 물로 미국 식품의약국에 따르면 250ppm 이상의 광물질이 자연적으로 포함돼 있어야 한다. 용천수는 지하에서 흐르다 암석이나 ...
small to create high pressure. The low friction of ice is probably caused by a layer of liquid water a few hundred molecules thick which always spontaneously develops on the surface of ice.THERE ARE ... in the 1970s a natural uranium reactor was found in an ancient streambed in Africa, and the mineral deposits there contained traces of a long-lived Plutonium isotope. This brings the total ...
do it. It filters the rare iodine out of vast quantities of sea water, and then human beings can harvest the seaweed, burn it, and ... called 'Thiobacillus ferroxidans' that actually lives on minerals. It extracts sulfur atoms from the minerals and combines them ... the energy to live on. In so doing, the bacterium break ups the mineral and releases other types of atoms. This can result in the ...
in all the key molecules of living tissue is nitrogen. Nitrogen atoms exist in the soil as part of mineral substances called "nitrates." Nitrates are, one and all, easily soluble. That means that when plants absorb water from the soil, that water contains a little nitrate. The plant uses the nitrates as raw material for the formation of nitrogen-containing compounds of importance to life ...
동아사이언스
디라이브러리
DS스토어
팝콘플래닛
