Controvercies in the field of science.
By pickwick
@pickwick (858)
India
March 12, 2009 9:13am CST
There are many controversies in the field of science ,for example Pasteur-Liebig controvercy.Pastuer believed that fermentation was because of activity of the living cell while Liebig felt that it was because of chemicals and self perpetuating instabilities induced in the solution by exposing them to air.We know today that Pastuer was correct.Do you know of other controvercies in the field of science which you would like to share here?Thanks to all in anticipation.
2 people like this
3 responses
@srijshm (1165)
• India
12 Mar 09
How would you explain this.
Draw an X mark on land . Place a helicopter on that mark & let the chopper go airborne & stay in the position for 90 minutes. If the earth is really rotating on it's axis, the helicopter should not be right above the X mark!
But when this experiment was actually done the chopper always remained right above the x mark!!!!! This would take some explaining
@mariposaman (2959)
• Canada
12 Mar 09
The air that the chopper is floating in is also turning with the earth. You are falling into the trap of if you cannot see anything there is nothing there. Like Pasteur figured out, there are these microbes we cannot see but that does not mean they are not there.
1 person likes this
@sanuanu (11235)
• India
21 Mar 09
If you do throw a stone from a train upwards then no matter what speed you throw it upwards, it will come back to in your hands. No matter how long it has been in the air.
Similar thing happen with helicopter too. The chopper leaves the earth when it has the earth's rotating speed too. Then no matter how long you would stay in the air, it will not leave the spot, unless your chopper's height is beyond the air environment!
I hope that was the clear explanation you were seeking for!
@nikky28 (1572)
• India
17 Mar 09
I have heard that Einstein's theory of relativity was refuted. Here is an excerpt from a site called wbabin.net -
" In Section 22 in his "Relativity" Einstein denounces the validity of the postulate of constancy of the speed of light in a gravitational field: "A curvature of rays of light can only take place when the velocity of propagation of light varies with position." This means that, if the position in question is occupied by an observer, this observer will measure a speed of light different from (e.g. greater than) c. The line of argument can be continued by applying the equivalence principle – then it will turn out that the measured speed of light depends on the speed of the observer
The discovered falsehood of the fundamental postulate should have made Einstein write extensive papers exploring all the consequences and convincingly explaining why an observer measuring a variable speed of light should nevertheless continue to believe in the theory of relativity. Needless to say, Einstein did not do so. Why? Is only his ethics to blame? "
It then goes on to argue about the ethics of scientists.
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@mariposaman (2959)
• Canada
12 Mar 09
Take a look in the USA and start talking about evolution. There are those that believe "creative design" should be taught as an alternative theory to the theory of evolution.
The fellow who discovered that microbes H.Pylori created stomach ulcers, was ridiculed for his findings. Even over a hundred years ago the doctor who suggested had washing because dirty hands spread disease was ridiculed. It is not even take seriously today as hospital infections continue to spread by workers not washing hands.
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@pickwick (858)
• India
13 Mar 09
Evolution is one of the most debated topic in the world of science.I am sure more theories will be coming up in this feild.
Its still a mystery how bacteria Helicobacter pylori causes cancer in the stomach and is a field of research open to scientist.Ah the wonderful and mysterious world of science.Thanks for sharing mariposaman.Have a nice day!
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