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Biological Swimmers

All articles tagged with #biological swimmers

science6 months ago•2 min saved

Scientists Discover Sperm Challenging Newton's Laws

Scientists discovered that human sperm and algae can swim through viscous fluids by exhibiting 'odd elasticity,' allowing them to defy Newton's third law of motion, which typically states that every action has an equal and opposite reaction. This phenomenon results from non-reciprocal interactions in systems far from equilibrium, providing insights that could influence the design of self-assembling robots and understanding collective biological behaviors.

via ScienceAlert|

#biological-swimmers #newtons-third-law #odd-elasticity

science2 years ago•0 min saved

Decoding the Unconventional Physics of Sperm Motion

Scientists at Kyoto University have discovered that human sperm move through thick fluids in a unique motion that defies Newton's Third Law of Motion. Contrary to expectations, these tiny swimmers navigate viscous environments with non-reciprocal interactions, allowing them to maneuver through substances that should hinder their progress. The researchers aimed to understand how sperm and other microscopic biological swimmers overcome these challenges.

via Interesting Engineering|

#biological-swimmers #kyoto-university #motion

science2 years ago•2 min saved

Sperm Cells Challenge Newton's Third Law of Motion

Scientists have discovered that sperm and certain microorganisms, such as Chlamydomonas algae, defy Newton's third law of motion by exhibiting non-reciprocal mechanical interactions. These biological swimmers use their flagella to move in a way that elicits no equal and opposite response from their surroundings, thus breaking the law of physics. The cells possess an "odd elasticity" that allows them to wiggle their flagella without expending much energy, enabling them to move forward in a manner that defies physics. Understanding this phenomenon could have implications for designing small elastic robots and studying other organisms capable of non-reciprocal movement.

via IFLScience|

#biological-swimmers #flagella #newtons-third-law