IYPT 2019 Problem 8 Sci-Fi Sound Demonstration

This is a demonstration of IYPT 2019 Problem 8 Sci-Fi Sound.
Filmed on the Sony RX100 V.
Background Grid Size: 1.00 cm
Slowmotion at 240fps
BGM:
Candlepower-Chris Zabriskie
Reference:
Slinky‐whistler dispersion relation from ‘‘scaling’’ by Frank S. Crawford
Media Recorded and Edited by: Jim Chen

[@MrSolcys]

Dispersion

[@thealtcoindoctor3341]

Hello, please does the length or thickness of the spring affect the sound produced? Please i need your help!

[@gyeoulbee]

thank you for the video! i just had a question: what is the exact purpose of placing the cup in the slinky?

[@canadianyoungphysiciststou9723]

The cup essentially just creates a larger membrane to move the air. The vibration in the slinky would be transfered into the cup. Once the cup is vibrating, it moves the air so that the sound wave could be heard by your ear. But if the cup (or any other membrane) is not placed, the slinky doesn't move the air enough for your ear to pickup easily.

[@gyeoulbee]

@@canadianyoungphysiciststou9723 was there a difference in sound and frequency, depending on whether you used the cup or not?

[@muai8492]

Do u mind if i want to know what meter did you use?

[@canadianyoungphysiciststou9723]

The device in the video is actually just a sound recorder. The model is a Tascam DR-05. It just allows me to get higher quality audio compared to the on camera microphone.