Final answer:
The 'magic trick' by Sphere seems to describe a fictional flying device using hydrogen balls and electric blades. Another magic trick, based in real physics, involves shattering a crystal glass with resonance. 'Mécanique celeste' refers to models demonstrating celestial motions, as mentioned in poetry.
Step-by-step explanation:
The "magic trick" that Sphere performed, as described in the context provided, seems to be a fictional device capable of flying, which uses a combination of hydrogen balls to counteract gravity and wing-like blades powered by electricity to enable movement. In real-world physics, the concept of using hydrogen balls to overcome gravity does not have practical application, as gravity is a force that applies to all mass. The reference to using electricity to power blades is akin to the function of a helicopter's rotors or a drone's propellers, which create lift through rapid movement slicing through the air.
In terms of an actual magic trick, the reference describes a performer shattering a crystal glass using resonance and natural frequency. This works because every object has a natural frequency at which it vibrates. When a singer hits the same frequency with their voice, the resulting resonance can cause the glass to absorb enough energy to shatter.
It involves intricate clockwork and gears resembling the movement of planets and stars. Robinson Jeffers's poem "Star Swirls" might poetically allude to this concept or to the swirling motion of celestial bodies in the galaxy.