Why is water added when cooking pasta and potatoes? Detailed answer

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Why is water added when cooking pasta and potatoes? Detailed answer

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Why is water added when cooking pasta and potatoes?

Salt water boils at a temperature slightly higher than 100°C. In this case, the products are cooked faster.

Author: Mendeleev V.A.

Random interesting fact from the Great Encyclopedia:

What insects are able to make spiders build an unusual web?

Parasitic riders of the species Hymenoepimecis argyraphaga are able to paralyze spiders and lay eggs on their abdomen. After hatching, the larvae of the parasite begin to suck the blood of the spider, which continues its usual life. However, before pupation, the larvae inject chemicals into the victim's body that change the behavior of the spider in such a way that it begins to build highly reinforced strands of its web in several layers. Turning into a chrysalis, the rider kills the spider with poison and forms a cocoon, which needs reinforced threads to hold on weight.

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Earth's orbit will be cleaned by satellites-janitors 28.02.2012

Swiss scientists from the Polytechnic School of Lausanne (EPFL) have announced plans to create satellites that will clean up near-Earth space from thousands of abandoned parts of satellites and launch vehicles.

According to EPFL data, there are about 16 debris particles larger than 10 centimeters in diameter and hundreds of millions of small particles flying at speeds of several kilometers per second in near-Earth orbits. Every year, a 10 sq. meters has a one in 10 chance of colliding with a piece of space debris larger than one centimeter. The Swiss are considering two options for cleaning satellites. The first satellite must capture debris particles, and then drag them into the upper atmosphere, where the debris, along with the cleaner, burns out. The second version of the satellite dumps debris into the atmosphere, but does not sacrifice itself, but remains in orbit.

The first option looks simpler and cheaper to implement, so Swiss scientists plan to test a prototype kamikaze cleaner called CleanSpace One on one of the two obsolete nanosatellites Swisscube or TIsat. CleanSpace One has a small size of 30x10x10 cm and is equipped with a gripping arm that can securely hold small objects during deorbit. In the development of a cleaning satellite, the most difficult task will be to create a reliable system for automatic rendezvous and capture of debris. Given the high speeds of satellites, as well as the possible chaotic rotation of orbital debris, this seems to be a very difficult task.

Construction and launch of CleanSpace One will cost almost $11 million and are scheduled for 2015-2016. Perhaps in the future, small cleaning satellites will become a standard additional load for launching commercial spacecraft, which should reduce the cost of orbit cleaning.

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