Dno jeziora Bajkał – Rosyjska mini-łódź podwodna Mir-2
Dno jeziora Bajkał – In July, 2008. Russian mini-submarine Mir–2 reached located at a depth of 1637 m the bottom of the Siberian Lake Baikal. It was the deepest immersion in fresh water in history. Lake Baikal contains 20% of the world‚s fresh water. The lake that formed approx. 20 million years ago, living approx. 1000 unique species of animals and plants. During immersion, scientists collected samples at different depths of the ecosystem so that they could determine the impact of global warming on the lake.
Woda ze studni
Woda ze studni – It comes with a small depth near the wells are often different factories, construction sites, flows into them rain water efflux fertilizers and other inputs used in agriculture. According to data from 2013. More than 90% of the wells contain tap water undrinkable.
Dirty water victims
Dirty water victims – According to the UN day for simple diarrhea caused by dirty water dying 6000 people, 60% of deaths of children under the age of five is also associated with poor water quality.
Piquancy measurement – Before it became possible to indicate the exact amount of active substance in peppers by means of chemical analysis, the so-called used. Scoville Unit. It is the work of the American chemist Wilbur Scoville, who created it in 1912. The piquancy has been studied using a solution of water, sugar and chili extract. Then tasters tried out on how much you dilute solution, in order to piquancy entirely disappeared.
Sound speed in water
Sound speed in water – The sound propagates in water at a speed of nearly 1.5 kilometers per second. Five times faster than the speed of sound in air.
How rainbow is formed
How rainbow is formed – It meteorological phenomenon optical (photo-meteor) being produced by the refraction of light rays in the water droplets in the atmosphere, where it is distributed across all colors.
Double rainbow – When viewed from Earth, rainbow looks like a semicircle, but the height can see the whole circle. Inside the drop may reach internal reflections rays. If the rays bounce off the drops twice come out at an angle of 51°. In this way, a so-called The secondary rainbow that appears above the main rainbow.
Oasis of the Seas
Oasis of the Seas – Keel cruise ship Oasis of the Seas was constructed on 12 November 2007. In the Finnish shipyard in Turku. Launching was held on 21.11.2008. To use it introduced 5.12.2009. And a year later the water was a sister ship Allure of the Seas. Gross tonnage of both vessels is 225 282 GT (1 GT = 2.8 m³). Allure of the Seas numbering 362 m in length is 50 mm longer than its sister ship. Both ships, which combines Caribbean from Port Everglades in Florida, are on board 6296 passengers and 2384 crew members.
Bluefin tuna – Although the bluefin tuna (Thunnus thynnus) is a Actinopterygii fish, most of which are cold-blooded, their body is from 6 to 20 degrees Celsius warmer than the surrounding sea water. This heat is generated within the muscle – and with them, mainly built tuna.
Impregnates – These substances have incredible properties – repel water and fat, protect against staining different materials. However, many studies have shown that the trace amounts found in our blood. Most preservatives are perfluorocarbons (PFCs), marked abbreviations PFOS and PFOA. Their molecules are extremely durable, so they can circulate in the environment for years. In animals can disrupt hormone levels and cause cancer. In humans, these substances can lead to thyroid disease and improve cholesterol levels.