about Physics (2001)
We list here the known corrections to the book that will be included in
the 2nd & 3rd editions.
Apr 10, 2001
Problem 102 Page 36
A clear plastic 6 mm diameter straw with a very
clean-cut 2 mm diameter circular hole works very well. Any slight jerky
movement of the hand causes the water below the hole to drop out. Cut
the hole before insertion, then insert and place finger on the top, and
finally remove straw at about a 30 degree angle ever so slowly and tilt
back to vertical.
Jan 15, 2003
Problem 238 Page 231
Column 1, Line 7: Replace r/R by Arcsin r/R
Apr 2, 2001 Problem 148 Page
199 Add at the end: What we
have here is not an interference problem but the consequences of a
quadrupole radiation pattern. One tuning fork tine vibrating produces a
dipole radiation pattern with lobes in the plane of vibration. Ditto
for the other tine. Only with two tines does one get a lobe
perpendicular to the plane of vibration, not from interference but from
a pumping action pulling air into and pushing air out from the region
between the tines.
Jun 17, 2003
Problem 203 Page 217
Replace the text and the reference with the following text and
reference: A voltmeter measuring between two points on a
copper ring shows a voltage that depends upon both its electrical
conductivity and A, the constant rate of change of magnetic flux. The
case of an extremely long ideal solenoid completely confining the
magnetic field and a ring composed of two small resistances R1 and R2
is discussed in detail in the reference. The voltmeter connected across
resistance R1 (with leads on the same side of the solenoid as R1) will
measure a voltage V1 = ± A R1/(R1 + R2), where the sign depends
upon the current direction and the orientation of the two voltmeter
leads. To the extent that the magnetic field exterior to the solenoid
can be neglected, this result does not depend, in principle, upon
whether the voltmeter leads are twisted or not or are arranged to lie
close to one another. REF: Romer, R.H., "What do 'voltmeters'
measure: Faraday's law in a multiply connected region", American
Journal of Physics 50(1982): 1089-1093.
Jun 17, 2003 Problem 51
Page 17 & Page 168 Title Rainbow is changed to Raindrops. Add to end of the
answer: Those who want to understand the physics details of the
rainbow, a more dificult challenge, should consult the Internet
or the references.
Descarte, René, Discours de
la Méthode Pour Bien Conduire Sa Raison et Chercher la
Vérité dans les Sciences (second appendix) La
Boyer, Carl B. The Rainbow From Myth to Mathematics, Princeton University Press ISBN
0-691-08457-2 and 02405-7 (pbk) Dover
Ahrens, C. Donald, Meteorology Today West
Publishing House ISBN 0-314-80905-8 (1999).