Questions tagged [physicalconstants-package]
The physicalconstants-package tag has no usage guidance.
8
questions
8
votes
2
answers
493
views
Getting useful units for combinations of physical constants like on WolframAlpha?
When I need to do order of magnitude estimates, I often encounter situations where I have a mess of physical constants and difficulty putting them in sensible units.
For example, consider the ...
- 183
3
votes
1
answer
109
views
In **Mathematica**, how to compute physical [closed]
I want to calculate the speed of a car:
180 km / 2 hour
(* 25 m/s *)
this is a simple question, but I do not know how to implement
- 605
5
votes
0
answers
143
views
Have Mathematica recognize physical constant [duplicate]
Say Barry, could you abuse the "answer your own question" feature of StackExchange to answer the currently on-hold Recognize physical constants? ?
user1722
0
votes
1
answer
218
views
Simplifying Complex Numbers that contain physical units
I am trying to evaluate the following:
Simplify[Meter Nano Re[(a + I b)/(Meter Nano)], Assumptions -> Element[{a, b}, Reals]]
However, Mathematica returns:
<...
- 101
6
votes
1
answer
3k
views
Using Physical Constants in V9
How is one supposed to work with physical constants in Mathematica V9? When I first open Mathematica, physical constants such as SpeedOfLight are not recognized. If ...
- 83
3
votes
1
answer
281
views
Why to do parentheses change the results of a calculation?
I'm getting results that are sensitive to where I place parentheses with respect to operations that are associative1 (and should thus be insensitive to such placement). For example, if I define2
<...
- 12.8k
2
votes
1
answer
262
views
Need more float precision
I have a Physics problem which huge and tiny numbers and Mathematica just gives me a speed of my particles which is the speed of light. Then $1/\sqrt{1-v^2/c^2}$ becomes singular.
If I use smaller ...
- 265
11
votes
3
answers
1k
views
Working with PhysicalConstants
I recently found the PhysicalConstants` package. First I thought this was nice, since I didn't have to look up some quantities all the time and copy them into the ...
- 633