Quick Answer
The seismic refraction critical angle calculator computes critical angle from the input values you provide.
Calculator
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Find Engineering Solutions →Result Interpretation
Seismic Refraction Critical Angle Calculator computes Critical angle in rad using the defined engineering formula and the input values provided. Critical angle is expressed in rad. No universal acceptance threshold is defined by this calculator.
Worked Example
Verified calculation
Given:
- P-wave velocity in upper medium = 1500
- P-wave velocity in lower medium = 3000
Expected Result:
- Critical angle = 0.5235987755983
Engineering Interpretation:
Under the given input conditions, the calculated result is: Critical angle = 0.5235987755983 rad.
The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from deterministically validated test cases.
Formula / Method
critical angle = asin(p-wave velocity in upper medium / p-wave velocity in lower medium)Critical angle.
Variables
| Symbol | Label | Role | Description |
|---|---|---|---|
| v1 | P-wave velocity in upper medium | INPUT | P-wave velocity in upper medium |
| v2 | P-wave velocity in lower medium | INPUT | P-wave velocity in lower medium |
| critical_angle | Critical angle | OUTPUT | Critical angle |
Calculation Steps
- Enter the p-wave velocity in upper medium in m/s.
- Enter the p-wave velocity in lower medium in m/s.
- Step 1: Compute critical angle.
- Read the critical angle (rad) from the results.
Frequently Asked Questions
What does this calculator calculate?
The Seismic Refraction Critical Angle Calculator estimates Critical angle based on the input parameters you provide
Why is p-wave velocity in upper medium important in this calculation?
p-wave velocity in upper medium is used directly in the calculation of critical angle. Its effect on the result depends on the complete formula and the values of the other inputs.. When you enter p-wave velocity in upper medium in m/s, the calculator uses it in the engineering formula to compute the output
How should I interpret the result critical angle?
The calculator outputs critical angle in rad. The result is computed directly from the input values using the defined engineering formula
What units should I use for the inputs?
Enter each value in the units shown next to the input field: P-wave velocity in upper medium (m/s), P-wave velocity in lower medium (m/s). Make sure all inputs use the specified units for consistent results
What assumptions does this calculator use?
This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment
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