# Introduction to Robotics/Sensors/Lecture/Students

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**Sensors**: Lecture (For Students) (For Teachers) —
Lab (For Students) (For Teachers) —
Assignment (For Students) (For Teachers) —
Quiz (For Students) (For Teachers)

**Name:_________________________________**

**Date: 10 / 17 / 2019 ** **Sound Waves**

- Speed of sound
*D*is the distance, measured in meters.*C*is the speed of sound in air, measured in meters per second.*t*is the amount of time the wave travels, measured in seconds.- At 72°, sound travels at 344.8
*m/s*.

- Convert to Centimeters
- We convert to centimeters because they are more useful, and it helps to remove fractions from our calculation.

- For the BoeBot
- Because the sound wave must travel to the object and
*back*. - The BoeBot measures
*t*in "clock cycles", which are each 2μseconds. We must convert the equation to use seconds instead of clock cycles:

- Fractional Math
- The BoeBot can do some limited math with fractions.
- The "**" operator is used as follows:
- We calculate that:
- We can use the following code to convert time to distance:
`Distance = Conversion ** time`

- Finding the Conversion Constant