Final answer:
The SRF05 sensor serves as a Ranging sensor, using ultrasonic waves to measure distances. Helium changes the sound of a voice due to its different density, affecting sound speed and vocal tract resonances. Sonic range finders, like the SRF05, require temperature calibrations because the speed of sound is influenced by temperature.
Step-by-step explanation:
The main purpose of the SRF05 sensor is to function as a C. Ranging sensor. This device is designed to measure the distance to an object using ultrasonic sound waves. The SRF05 emits a short ultrasonic pulse and then listens for the echo. By calculating the time interval between sending the pulse and receiving the echo, the sensor can determine the distance to the object.
The phenomenon of talking in a high-pitched voice after inhaling helium is due to helium's lower density compared to air, altering the speed of sound and resonant frequencies of your vocal tract. Regarding sonic range finders used in labs, these devices operate on the principle of echolocation, similar to the functionality of the SRF05 sensor.
The need for room temperature calibration in these devices is crucial because the speed of sound is temperature dependent. At higher temperatures, sound waves travel faster, and vice versa. Calibrating the range finder for the current room temperature ensures accurate distance measurements.