Does a vacuum float in air?

Related questions

1. What is gyroscopic principle?
2. How does a Gyrometer work?
3. Why does a gyroscope not fall?
4. Why does a rotating wheel not fall?
5. Why does Gyro Compass fail in higher latitude?
6. Is perpetual motion possible in a vacuum?
7. How gyroscope becomes a gyrocompass?
8. Why gyroscope is used in mobile phones?
9. Does iPhone have magnetometer?
10. Who invented gyro?

Tags

1. #lighter
2. #actually
3. #which
4. #nothing
5. #still
6. #filled
7. #although
8. #hydrogen
9. #float
10. #helium
11. #vacuum
12. #better