First, it is unscientific to accept any theory as fact. A fundamental rule of the scientific method is fallibilism, which recognizes that all knowledge we have is only the closest approximation to the truth that we've found up to now.
A great example of the need for this is uniformitarianism. What the scientists can reasonably say is that what they SEE of hydrogen throughout the universe APPEARS to be the same. Or whatever other metric they attempt to test. But they cannot rule out physics changing in ways that would not be observable in this fashion.
When a supposed scientist claims that one must accept theory X as fact in order for science to be useful, he is committing multiple fallacies.
The most important is that feeling the need for something doesn't make it so. If physics has changed, then it has changed, and the inconvenience of this for scientists is their own problem. Refusing to consider this simply cripples scientific endeavor that much more.
cause they were scientist is some of the answere. it was more than one theory. where the probaly most known is catastrophism. so many belived something else, and scientist is if not dissaproved, stubborn.
The scientist that designed the atomic theory is Thomas Jefferson.
Lynn Margulis ;)
Viktor Safronov
the scientist who fond the cell theory like Robert hooke
Charles Darwin.
why did other scientist not accpet Alfred Wegeners theory
Each scientists have there own opinion. Some accept theories and some have to have facts.
Just accept his theory.
They generally don't. The Giant Impact Hypothesis is generally accepted amongst scientists.
ideas
The Atomic Theory
cell theory
Cell Theory
experiments test the scientist theory
theory
A scientist's theory might not be believed even it is correct, if the theory is such a radical departure from existing beliefs that it seems bizarre. The theory of continental drift (which, of course, was eventually accepted) was resisted for decades because it just seemed obvious to people that the continents are not drifting, since we do not notice any such motion. It could also happen that a scientist has a valid theory but has not adequately explained, or experimentally tested that theory. Other scientists require evidence in order to accept a theory.
Because if scientists aren't open-minded, they could try to discredit or change the results of a valid experiment, or not accept a theory that may actually be right, and discredit the theory, therefore stopping progress in science.