Light and sound travel
Compare light and sound travel over the same distance. Sound depends on the medium and conditions, while the light calculation assumes a vacuum.
Your inputs
Start with the example values, then replace them with your own. For tables, keep the vertical bar separators and use a dot for decimals.
This simplified educational calculation has stated assumptions. Do not use it for navigation, engineering safety or other safety-critical decisions.
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Result and workspace
Use the start button to open your result or activity.
How it works
Travel time = distance / speed. Light in vacuum uses 299,792,458 m/s; sound speed is user supplied.
Worked example
These sample results use the original example inputs in the form. They do not change when you edit your inputs; your own result appears in the workspace.
- Light travel time: 0 seconds
- Sound travel time: 2.9155 seconds
Read the result carefully
Results depend on the values and assumptions shown above. Change one input at a time to see its effect. A blank or unavailable result means the data does not support a calculation; it is not zero.