Do you have a
question related to physics? Since 1999 I have answered more than 4000
questions on line and many more by brief email. To see how I select
questions to answer, link here. If you do not submit a valid email address, I will not
answer your question; if you do not receive an immediate automatic reply to
your question, your email address was not valid or your mail server rejected
the message. Please read the
for the site. If the answer is to your liking, please
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service. A history
of past questions and answers may be seen by clicking
have organized old answers into categories for
easier searching or perusing.
is now an Ask the Physicist
facebook page. I
cannot answer questions there because the formatting is too limited, but I
will use the page to note recent answers which I find particularly
interesting. If you "like" the page you will receive such notifications.
Also, if you would like to make comments on my answers, that would be a good
groundrules, (Please stop sending me obvious textbook
problems. Likewise, this is not a tutoring site; do not ask me to
help you with your homework. Note, though, that many sites which
advertise on this site provide homework help or tutoring.)
I consider to be "off the wall",
are not likely to be of general interest to
the many people I know read the answers, or
do not include a valid
email address (if you don't get an immediate "we'll be in touch"
reply, your email doesn't work),
will simply be discarded.
In the past, I have tried to answer all questions even if the answer is simply that I won't
or can't answer, but that is becoming too time consuming. If you don't
get an answer within a week or two, you can always ask again with a
"plea"; no guarantees, though.
If your question is clearly astronomy or astrophysics, particularly
detailed questions about black holes, stellar evolution, dark matter or
dark energy, the big bang, etc., areas in which I am not expert, I may
not answer. If you google ask astronomer or ask astrophysicist you will get lots of
possibilities. I recommend
Ask an Astrophysicist. Another good place is
Curious about Astronomy?
I am not a psychic! Look them up,
Please read site
groundrules and peruse the
FAQ page before submitting your question. You can
the site for previous answers. Although I do not answer homework
questions or do tutoring, many of the sites which advertise on this site
(look left) do.