- p.14 last line: should read, `Real numbers include all integers, all possible fractional values, and all irrationals as well'. (Note the reals must include the irrationals: sqrt(2) is not a rational)
- p.22 Fig 2.10: penultimate note in F major scale is E not E#
- p.29, Fig 2.19: The plus signs in the list `f + 2f + 3f + ...' are mathematically meaningless. If multiples of a frequency f are superposed, the frequencies do not get added. Fig. 2.27 better represents partials.
- p.43, Fig. 3.1: As above, plus signs are mathematically wrong.
- p.104, (4.13) and preceding 2 eqns:
The formula a_average = s/t^2 is wrong, and is missing a factor of
1/2 (although it is still misleading).
This stems from a confusion
between average v and Delta v (change in velocity).
The paragraph surrounding (4.13) should be
ignored, and (4.12) should read same as (4.14).
This causes a bunch of quite serious trickle-down errors:
- p.111: 2nd and 3rd line of equations, should be entirely cut since it is wrong and a misleading derivation of kinetic energy. This style of derivation specifically would apply only to uniform acceleration which is not mentioned.
- p.111, (4.28) missing factor of 1/2
- p.143, 8th line down: E_k=mv^2 missing factor of 1/2
- p.144: (5.27) missing factor of 1/2

- p.132, (5.8): alpha should be defined as the limit of Delta omega / Delta t as Delta t goes to zero. The rest given is wrong. This is analogous to the discussion of linear acceleration.
- p.134, bottom, in bold: Should read, `Circular motion is the result of a centripetal force applied at right angles to the instantaneous velocity.'
- p.194: there is an error persisting throughout this page down to the final equation. If a speaker has intensity I, then at twice the distance the intensity is I/4, not sqrt(I). This mistake affects each equation on this page: sqrt should be replaced by a factor 1/4, and squaring by a factor of 4.
- p.231 3 lines from bottom: Statement that only relative velocity matters for 2D Doppler is wrong. Just as with 1D Doppler, both source and receiver absolute motion (ie relative to the air) matter.
- p.232: this whole page is incorrect and should be ignored; 2D Doppler is covered in other books. In brief, at position 3 there *is* relative velocity, just not along the line-of-sight. I believe Loy is using the symbol z_bar to mean line-of-sight velocity, in which case it is given by ux/z not the complicated expression given. This makes the main result (7.26) wrong.
- p.246: V = 7.5 * 10^4 or 7.5E4, but not 7.4^{-4}.
- p.460 Ch. 5 Note 4: Circular motion certainly is not the *vector sum* of centripetal force and linear velocity. These two quantities have different units so cannot be added!

Please contact me, Alex Barnett, with additions or corrections.