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Polarization Calculator

Find transmitted intensity with Malus’s law for an ideal analyzer. Provide Incident linearly polarized intensity, Polarizer axis angle (degrees) to compute results directly in your browser. I=I0*cos²(theta), incident light already linearly polarized. Not the first-polarizer I0/2 model for unpolarized light; intensity units retained, no absorption or safety model. Inputs and results use floating-point numbers; output shows up to 12 significant digits. Rounding can occur.

Free to useNo sign-upRuns in your browser
Enter your details

Enter the inputs, then select Calculate.

Allowed range: 0 to 1000000000.

Allowed range: 0 to 180.

Your result
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Result will appear here

How the Polarization Calculator Works & Core Formula

The Polarization Calculator evaluates Incident linearly polarized intensity, Polarizer axis angle (degrees) in client-side JavaScript using the deterministic rule below and updates the output panel immediately without uploading data to a server.

Find transmitted intensity with Malus’s law for an ideal analyzer.

I=I0*cos²(theta), incident light already linearly polarized. Not the first-polarizer I0/2 model for unpolarized light; intensity units retained, no absorption or safety model. Inputs and results use floating-point numbers; output shows up to 12 significant digits. Rounding can occur.

Concept diagram for Polarization Calculator, showing incident linearly polarized intensity input and the supported output.
Concept diagram; the three operation images are actual browser captures.

Polarization Calculator Quick Reference & Input Guide

Review the input parameters, allowed value ranges, and worked reference cases for the Polarization Calculator below before running your calculation.

Parameter / ScenarioDefault / Sample ValueRule or Allowed RangeOutput / Usage Note
Input: Incident linearly polarized intensity100Range: 0 to 1000000000.0Required workspace parameter
Input: Polarizer axis angle (degrees)60Range: 0 to 180Required workspace parameter
Worked Case 1: Baseline run (Incident linearly polarized intensity = 10)Preloaded / test valuesFind transmitted intensity with Malus’s law for an ideal analyzerIncident linearly polarized intensity = 100; Polarizer axis angle (degrees) = 60. The displayed output is 25 intensity units.
Worked Case 2: Comparison scenario (polarization loss calculator)Preloaded / test valuesFind transmitted intensity with Malus’s law for an ideal analyzerIncident linearly polarized intensity = 80; Polarizer axis angle (degrees) = 45. The displayed output is 40 intensity units.

Step-by-Step Guide to Using the Polarization Calculator

Follow these three steps to configure Incident linearly polarized intensity, Polarizer axis angle (degrees), verify unit and boundary rules, and export your Polarization Calculator output.

Enter incident linearly polarized intensity

Enter incident linearly polarized intensity. Allowed range: 0 to 1000000000.

Input and settings
Polarization Calculator: input and settings in the implemented browser tool
Actual local browser view. Open the image to read it at full size.

Complete the other inputs

Set polarizer axis angle (degrees). Start with already linearly polarized incident light and an ideal analyzer.

Tool result
Polarization Calculator: tool result in the implemented browser tool
Actual local browser view. Open the image to read it at full size.

Calculate and read the output

Select Calculate to see the transmitted intensity under Malus's law. Copy result copies this text; Download saves it as a TXT file.

Review the details
Polarization Calculator: review the details in the implemented browser tool
Actual local browser view. Open the image to read it at full size.

Practical Worked Examples for Polarization Calculator

These concrete scenarios illustrate how the Polarization Calculator processes baseline inputs, comparison checks, and boundary constraints.

Baseline run (Incident linearly polarized intensity = 10)

Incident linearly polarized intensity = 100; Polarizer axis angle (degrees) = 60. The displayed output is 25 intensity units.

Abstract input values and a mathematical worksheet.
Start with the values. Concept illustration.

Comparison scenario (polarization loss calculator)

Incident linearly polarized intensity = 80; Polarizer axis angle (degrees) = 45. The displayed output is 40 intensity units.

Two calculation examples shown for comparison.
Compare a second example. Concept illustration.

Boundary & unit check (Polarization Calculator)

When solving for 'polarization calculator', verify that Incident linearly polarized intensity, Polarizer axis angle (degrees) use consistent units and stay within the documented scope: I=I0*cos²(theta), incident light already linearly polarized. Not the first-polarizer I0/2 model for unpolarized light; intensity units retained, no absorption or safety model. Inputs and results use floating-point numbers; output shows up to 12 significant digits. Rounding can occur.

A calculation and supporting explanation represented conceptually.
Explain the calculation. Concept illustration.

How to Read and Verify the Polarization Calculator Output

The output panel reports the exact result derived from Incident linearly polarized intensity, Polarizer axis angle (degrees) alongside any unit or formatting notes.

The result is the transmitted intensity under Malus's law. Estimate transmitted intensity at a chosen analyzer angle.

The initial unpolarized-light half-intensity rule is a different step and is not included in this calculation.

Numerical output shows up to 12 significant digits. Floating-point arithmetic and display rounding can affect the last digits.

Example input
Incident linearly polarized intensity = 100; Polarizer axis angle (degrees) = 60
Example output
25 intensity units
A mathematical result connected to the values used to calculate it.
Read the result with its inputs. Concept illustration.

Scope Limits, Accuracy Assumptions & Related Everyday Math Tools

Review these boundary constraints and validation rules before relying on the Polarization Calculator output.

Operational scope: I=I0*cos²(theta), incident light already linearly polarized. Not the first-polarizer I0/2 model for unpolarized light; intensity units retained, no absorption or safety model. Inputs and results use floating-point numbers; output shows up to 12 significant digits. Rounding can occur. Inputs that violate minimum/maximum bounds or required format rules are rejected with a clear diagnostic prompt.

Need an adjacent calculation in Everyday Math? Use the related tools linked below to chain your workflow without leaving your browser.

Values and units reviewed before relying on a mathematical result.
Check values and units. Concept illustration.

Frequently Asked Questions About Polarization Calculator

Answers about using Polarization Calculator and understanding its results.

What formula or rule does the Polarization Calculator use?

The Polarization Calculator applies the rule: Find transmitted intensity with Malus’s law for an ideal analyzer. Enter Incident linearly polarized intensity, Polarizer axis angle (degrees) into the workspace and the tool computes the exact output in your browser.

What input parameters and units are required for Polarization Calculator?

Yes. Provide Incident linearly polarized intensity, Polarizer axis angle (degrees) using the documented units and format shown in the quick reference table above. Preloaded default values let you test the workflow immediately.

What are the accuracy limits and boundary assumptions for Polarization Calculator?

I=I0*cos²(theta), incident light already linearly polarized. Not the first-polarizer I0/2 model for unpolarized light; intensity units retained, no absorption or safety model. Inputs and results use floating-point numbers; output shows up to 12 significant digits. Rounding can occur. Confirm that your inputs fall within the allowed ranges before exporting the result.

Is the Polarization Calculator free and does it keep my inputs private?

Yes. All calculations for the Polarization Calculator execute 100% locally in your browser's JavaScript runtime. No inputs or results are uploaded to any external server.

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