Global warming is the rise in the average temperature of Earth’s atmosphere and oceans since the late 19th century, and its projected continuation. Earth’s climate is mostly influenced by the first 6 miles or so of the atmosphere which contains most of the matter making up the atmosphere. This is really a very thin layer if you think about it.
Warming of the climate system is unequivocal, and scientists are more than 90% certain that it is primarily caused by increasing concentration of greenhouse gases produced by human activities such as deforestation and the burning of fossil fuels.
The most significant greenhouse gas is actually water vapor, not something produced directly by humankind in significant amounts. However, even slight increases in atmospheric levels of carbon dioxide (CO2) can cause a substantial increase in temperature.
Global Warming Impacts:
· Rising seas
· Changes in rainfall patterns}increased likelihood of extreme events
· Melting of the ice caps
· Melting glaciers
· Widespread vanishing of animal populations
· Spread of disease
· Bleaching of Coral Reefs due to warming seas and acidification due to carbonic acid formation
· Loss of plankton due to warming seas
However, in reality, we will need to work on all fronts- 10% here, 5% here, etc., and work to phase in new technologies, such as hydrogen technology, as quickly as possible. To satisfy the Kyoto protocol, developed countries would be required to cut back their emissions by a total of 5.2 % between 2008 and 2012 from 1990 levels. Specifically, the US would have to reduce its presently projected 2010 annual emissions by 400 million tons of CO2. One should keep in mind though, that even Kyoto would go little ways toward solving the problem. In reality, much more needs to be done.
The Overbalanced Wheel is an example of perpetual motion, the oldest attempt at a perpetual motion device in history. The oldest known description of on is from 8th century India- a wheel with vials of mercury arranged in such a way that as the wheel rotates, the mercury sloshes away from the center on one side, but towards it on the other.
Now these days we know that the perpetual motion is heavy and expensive, and dangerous. That’s why has been replaced with shifting mallets, but the principle it still operates the same. Perpetual motion describes motion that continues indefinitely without any external source of energy; impossible in practice because of friction.
For millennia, it was not clear whether perpetual motion devices were possible or not, but the development of modern theories of thermodynamics has indicated that they are impossible, despite this, many attempts have been made to construct such machines, continuing into modern times.
Diesel engine requires timely and a good performance of maintenance, to avoid any trouble and safety issues with your diesel engine. Let your car warm up for 5 to 10 minutes when cold temperature to decrease oil density. Change the oil every 3,000 miles, replace the timely belt earlier if it shows crack. Use a good quality diesel oil to prevent engine, gelling, and change the coolant every 2 years to avoid undue engine warm up. Fix any leakage from the radiator water pump or the freeze plugs. Check the oil transmission fluid level every week. Get a car check up every 50,000 miles. Also clean the air filter every 15,000 miles so it won’t be dust that is keeping the cold air away. Take your car to inspection every 6 months before the seasons start especially summer and winter. These are some ways you can take care of your car.