Topic: Physics

Physicists at NYU created a new time crystal that doesn't follow Newton's Third Law. Instead of equal and opposite reactions, the particles interact in an uneven way.

This floating time crystal is a unique form of matter where tiny particles move back and forth in steady cycles. Scientists first predicted its existence and later confirmed it about a decade ago. Although practical uses haven't been developed yet, these systems are promising for future technologies like quantum computing and advanced data storage.

A team at New York University has now created a new version of this time crystal. In this system, tiny particles float on a cushion of sound and interact by exchanging sound waves. During these interactions, the particles behave in a way that appears to break Newton's Third Law, which states that for every action, there is an equal and opposite reaction.

The researchers used small styrofoam beads, similar to packing material, held in place by sound waves. This setup acts as an 'acoustic levitator,' allowing the beads to remain suspended and still in mid-air. The beads interact by scattering sound waves between each other. Larger beads scatter more sound than smaller ones, creating an imbalance in how they influence each other.

The research was supported by grants from the National Science Foundation. The study may also help scientists better understand biological timing systems such as circadian rhythms.

Why It Matters

This discovery could lead to new technologies and industries. It might also help us better understand our own bodies' internal clocks, which is important for our overall health.

Key Facts

• Scientists at NYU created a new type of time crystal that breaks Newton's Third Law.
• The particles interact by exchanging sound waves in mid-air.
• Larger beads scatter more sound than smaller ones, creating an imbalance.

Key Terms

Time Crystal

A unique form of matter where tiny particles move back and forth in steady cycles

Implications

This discovery could lead to new technologies and industries. It might also help us better understand our own bodies' internal clocks, which is important for our overall health.