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Expert: Daniel Mazur - 12/17/2005


Question
hello
hy
how many types of force exists ?
is there 5th type of force exists ?
help me
thank you.
by

Answer
Hi Armin,

in science we recognize four basic types of forces: strong, weak, electromagnetic and gravitational. So far there has not been reliable evidence to support existence of any more.

You will definitely find many people, who believe in other forces, psychic, divine (forces of gods), magic and similar. Unfortunately, events that reportedly do not have logical explanation based on the four known forces are rare, not reproducible and on many accounts lack credibility.

To sum up, no, there is no 5th type of force science would recognize. Existence of such is a matter of each person's personal belief, not based on reliable experimental evidence.

I hope this answers your question.
Daniel

Careers: Physics

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Daniel Mazur

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Questions anyone (teenager, undergrad, graduate, professional) may ask on physics, mathematics or inorganic chemistry. Questions may concern subjects themselves or a possible future career in them, if you need advice on a school or hobby project, or you just came across a question that is beyond your current curriculum. I answer bare textbook problems sometimes, but I reserve the the right to redirect you to Physics-Physics section. The kind of questions I like to answer: I just started having science classes at school and they seem difficult, but I enjoy them. Where do I find more information on this, which is not in textbooks but still comprehensible to me? Just leaving high school, and I feel science is really the thing for me. Can you recommend a school and an undergrad program suitable to my inclinations? I am in my second undergraduate year in Physics. We learned the basics of universe expanding this year, the Hubble constant and all that, but invited speakers that gave talks on astrophysics in our department seemed not to agree with this model at all. Is it of any use at all? I am building a [materials research] experimental device for my masters/doctorate thesis and I have the following problem:... I have tried ..., but it still doesn't work. Where might the problem be?

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