# Recent content by Reed

1. ### Chromatic Aberration

I'm not sure on an exact measurement, but I wouldn't call it negligible. If it were, camera lens manufacturers wouldn't employ the use of aspherical elements and low-dispersion glass.
2. ### School me.

Yeah, the more I think about it, the more it makes sense. Good formula. I don't know why nobody taught me in high school. Anyways, sorry if "school me" sounded rude or anything. Just trying to keep a sense of humor in everything I do.
3. ### School me.

Four sides. a = 6 b = 14 c = 9 d = 17 My rounded solutions output angle values of 117.45, 88.92, 78.57, and 75.03 That's exactly what I was looking for. Now time to apply it to some useful things. :) Thanks a lot, guys
4. ### School me.

Doh! Got a mistyped formula from a crappy website. Mathworld shows that b AND c are multiplied with the cosine, which makes a lot more sense. Off to do some math (I mean work) again.
5. ### School me.

Say I have a triangle whose sides measure 17in, 16.5in, and 6in. a=17 b=16.5 c=6 A=x 17^2 = 16.5^2 + 6^2 - 2(16.5)Cos X 289 = 272.25 + 36 - 33(Cos X) -33(Cos X) = -19.25 Cos X = .583 X = 54.3 degrees? I'm sure I'm making some gay mistake here... Doing it that way would...
6. ### School me.

Do the sine, cosine, and tangent functions not apply only to right triangles?
7. ### School me.

I want to do some math for 4-link suspension, and I soon realized I don't know crap. Say I take measurements of the lengths of the four connecting rods and one angle measurement. How do I find the values of the other three angles?
8. ### Cars: Weight Transfer

As I've learned from the "Physics of Racing" series by Brian Beckman, weight transfer of a car during braking can be determined by the acceleration, height of the car's center of gravity, length of the car's wheelbase, and weight of the entire car. Now I realize that changing the spring rates...