# Tagged Questions

Questions about using, converting, or interpreting units of measurement in Mathematica.

392 views

### Incomplete implementation of units?

I've been playing around with the new units capability in MMA9 and I'm becoming a bit frustrated with what I perceive as an incomplete implementation of this capability and I'm wondering if there are ...
85 views

### Spectral Radiance unit Flicks is not correct

I was pleasantly supersized that Mathematica (10.3, 10.4 and 10.4.1) had the unit $\text{flick}$ until I spent several hours trying to figure out why all my calculations were million times off! I ...
58 views

### Calculations with “Quantities” Run Slow. What am I doing wrong?

This code plots a 1000 point black body radiation curve in 0.7 seconds. ...
200 views

### Quantity and Trig functions

I have a bunch of data to which I've assigned units using Quantity, including some angular measurements in degrees. I'd like to be able to use these measurements ...
74 views

### Inequality involving Quantity stays unevaluated

Bug introduced in V10.1 and presisting through V10.4 An expression like this one a < x < b is represented as ...
105 views

### How to insert a formula to FormulaData?

Unit Checking Demo In order to throw a unit error,we run the code ...
168 views

### Physical constants seems broken in 10.3

For example, if I just enter Quantity["GravitationalConstant"], then the result is this ...
47 views

### Unit of output changes when constant quantity is moved over integral

Why do these two expressions give the same result in different units? In: Integrate[ gravitationalAcceleration Quantity[1, "g/m^3"] fluidArea h, {h, 0, height}] ...
47 views

### TimeSeriesInsert issue with Quantity expressions

Solved in Mathematica v10.3 This first sample code works as expected: ...
74 views

### Powers of dimensionless quantities: is this a bug?

Today I came across the following behavior: Quantity[x, "Minutes"/"Minutes"]^-1 (* Quantity[1/x, (1/#1 &)[("Minutes")/("Minutes")]] *) It seems that ...
101 views

### Quantities formatting problem

So I've developed this simple code ...
52 views

### How would one make units work with a variable of unknown magnitude?

So, right now, I am working on setting various quantities up as functions of R. R will be varying later on, so right now I just have it set to the variable radius. It's breaking my dimensional ...
152 views

### Is it possible to use Gaussian cgs units in $Mathematica$ computations?

I was trying to do computations in Gaussian cgs units, and of course I failed due to dimensional issues. For instance, $q_1 q_2/r$ cannot be converted to $\mathrm{erg}$ since Gaussian system uses \$4\...
124 views

### Insert a Quantity Unit literal in TraditionalForm

Is there a keyboard shortcut for creating something like the result of this: Quantity["Kilograms" * ("Meters")^2 / ("Seconds")^2] After copying the result to a <...
78 views

### Will aliasing the Quantity and UnitConvert functions to “in” and “to” create problems?

It seems that there is a lot of interest in enhancing the use of units in Mathematica; various solutions in the name of brevity, correctness, and general utility have been demonstrated. I've begun ...
30 views

### Using Infinity with AutomaticUnits

I am using the AutomaticUnits package in Mathematica 10, and I am writing some unit checking functions. However, I run into a problem when I have an Infinity, since ...
56 views

### Using Quantity[] units causes errors in my calculation

I have an interpolation function in which I wish to use actual units. If I perform the calculation normally, it works fine and returns a proper FittedModel. To illustrate my problem, consider the ...
88 views

### Geodesy without units?

Suppose I'm interested in the latitude of Los Angeles and I do the following: ...