Posted by buickanddeere on June 03, 2012 at 12:59:42 from (184.151.61.116):
In Reply to: Re: ot radon posted by Retired Farmer on June 02, 2012 at 20:05:15:
You and wil e need to know what you are talking about before offering an opinion. Radon is the most aggressive ionizing radiation there is. More than gamma or Beta. It"s a helium nucleus stripped of electrons with about 5M electron volts energy. External exposure is nil as Alpha can not penetrate through clothing or the top layer of dead skin cells. Internal uptake is another matter. Inhale Alpha and you directly expose live respiratory tissue. And the entire digestive tract as we swallow much of the phlegm we cough up or have run from our nasal/sinus cavities. Radon is a hazard. Btw I"ve held a orange, yellow and now green radiation protection qualification for the past 21+ years. What are your qualifications?
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Today's Featured Article - Engine Valves - Some Helpful Information - by Staff. Intake - On the intake stroke the piston moves doward, sucking in carburized fuel through the open intake valve. Exhaust valve is closed. Compression - With both the intake and exhaust valves closed, the pistons upward stroke compresses or squeezes the fuel into the combustion chamber. Firing - Ignited by the spark, the compressed fuel explodes and forces the piston downward on its power stroke. Intake and exhaust valves are closed. Exhaust valves and seats are exp
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