У вашего броузера проблема в совместимости с HTML5
Why does a gyroscope not turn in the direction you push it? Seeing the equations that tell me this is not satisfying to me. I have found a way to think about it that allows me to sleep at night.
Vsauce made a much better video explaining it.
Spinning
https://youtu.be/XHGKIzCcVa0