This app calculates the value, following Snell's law.
1. Fill in three out of four blanks.
2. Click "CALC" button.
3. You can get the value of the rest blank.
Next time you start this app, you can start it as the same values.
1. Fill in three out of four blanks.
2. Click "CALC" button.
3. You can get the value of the rest blank.
Next time you start this app, you can start it as the same values.
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