Blandade frågor, myter och annat.
Ja, här kommer lite myter, hur bra är ni på att skilja myter från verklighet?
Ja, här kommer lite myter, hur bra är ni på att skilja myter från verklighet?
Tungan:
http://www.asha.org/Publications/leader/2002/021022/f021022a.htm
If you have performed this test, you may be surprised to learn that the tongue map is wrong. It is a mistranslation of an early-1900s German thesis that was disproved in 1974. Unfortunately, it continues to be published in textbooks today.
For the record, we perceive all taste qualities all over our tongue, although there may be increased sensitivity to certain qualities in certain areas. In addition, it is important to remember that our taste system provides information on the intensity and pleasantness (or unpleasantness) of taste as well. What we like and dislike in food can change over time, a fact to which parents of preschoolers and teenagers can attest.
Huvudet:
http://www.guardian.co.uk/science/2008/dec/17/medicalresearch-humanbehaviour
When it comes to wrapping up on a cold winter's day, a cosy hat is obligatory. After all, most of our body heat is lost through our heads – or so we are led to believe.
Closer inspection of heat loss in the hatless, however, reveals the claim to be nonsense, say scientists who have dispelled this and five other modern myths.
They traced the origins of the hat-wearing advice back to a US army survival manual from 1970 which strongly recommended covering the head when it is cold, since "40 to 45 percent of body heat" is lost from the head.
Rachel Vreeman and Aaron Carroll, at the centre for health policy at Indiana University in Indianapolis, rubbish the claim in the British Medical Journal this week. If this were true, they say, humans would be just as cold if they went without a hat as if they went without trousers. "Patently, this is just not the case," they write.
Hundar:
http://www.vetmed.wsu.edu/cliented/anatomy/
Dogs and cats do not sweat through their skin. They only sweat from their footpads and nose. They lose water by panting rather than sweating.