Tag

Experiments

All articles tagged with #experiments

science3 days ago•133 min saved

Tap Myth Tilt: The Real Physics Behind Soda Foam

Tapping a shaken soda can isn’t reliably effective at preventing fizzing. The CO2 in carbonated drinks is supersaturated, and tapping can create pressure waves that briefly dislodge some bubbles, but it also can generate new nucleation sites, with studies showing little to no difference in foam or content loss between tapped and untapped cans. For fewer spills, let the can rest upright, keep it cold, and open slowly to vent gas before full opening.

via Live Science|

#carbonated-drinks #experiments #kitchen-science

science10 days ago•42 min saved

Bubbles Boost Heat Removal in Microgravity—Until a Safety Threshold Is Reached

An npj Microgravity study finds that in near-zero gravity boiling liquid nitrogen can temporarily improve heat removal because bubbles cling to the heater, but once a heat threshold is exceeded cooling collapses (max heat removal falls ~65% vs ground tests); the result emphasizes surface design, using a smooth silicon wafer, for cooling space fuels and electronics.

via Currently.com|

#cryogenic-liquids #experiments #heat-removal

science29 days ago•14 min saved

Rats show helping behavior, but chocolate twist fuels empathy debate

A 2011 Science study found a free rat learned to open a tube to release a trapped cagemate, and when chocolate was added as a competing reward the latencies were similar and the free rat ate fewer chocolate chips, suggesting prosocial behavior but not definitive empathy. Subsequent work questions whether the behavior reflects true concern for others or social/interest factors, and the debate about rat empathy continues.

via Space Daily|

#animal-behavior #empathy #experiments

science1 month ago•6 min saved

Backwards Sprinkler Mystery Solved: Water Momentum Spins the Device, But Very Slowly

Researchers tested both standard and 'silly' sprinklers to resolve Feynman’s reverse-sprinkler puzzle. They found a reverse sprinkler does rotate in the opposite direction to a forward one, but at roughly 50 times slower. The motion arises from incoming water jets colliding off-center inside the central chamber, transferring angular momentum and producing a torque in line with momentum-flux theory; this held across varied arm shapes. The work strengthens a general framework for predicting fluid-driven rotation in turbines, pumps and energy-harvesting devices.

via The Times of India|

#experiments #fluid-dynamics #momentum-flux

science2 months ago•3 min saved

Bees Roll to Reach Reward, Demonstrating Tool Use and Flexible Thinking

Bumblebees solved a tool-use task by rolling a ball to reposition it under a ceiling-held artificial flower, with 75% success in the basic version and 23 of 30 in a more complex setup, showing flexible problem solving in miniature brains and challenging the view that insects act purely on instinct (study published in Science).

via The Guardian|

#animal-cognition #bees #experiments

science7 months ago•1 min saved

19th-Century Popular Sound Science Experiments

The article explores popular 19th-century science experiments with sound, highlighting Ernst Chladni's work with Chladni figures that visually demonstrate sound waves, and discusses how Victorian society engaged in hands-on acoustic experiments as both entertainment and education.

via Hackaday|

#19th-century #acoustics #chladni-figures

science7 months ago•7 min saved

Space-origin theories gain support in understanding Earth's life beginnings

New experiments support the 'RNA world' hypothesis by demonstrating how RNA could have formed on early Earth, with borates playing a beneficial role in stabilizing RNA components, suggesting a plausible pathway for the origin of life around 4.3 billion years ago, possibly delivered by asteroid impacts.

via Space|

#astrobiology #earth #experiments

science10 months ago•3 min saved

Russian Cosmonauts Conduct Spacewalk to Install Experiments on ISS

Russian cosmonauts Sergey Ryzhikov and Alexey Zubritsky completed a nearly 7-hour spacewalk outside the ISS, installing experiments, cleaning a window, and relocating equipment on the Nauka module, while avoiding debris from an upcoming cargo vehicle.

via Space|

#experiments #international-space-station #nauka-module

science11 months ago•18 min saved

Exploring Anti-Gravity Propulsion Technologies

The article explores the history, experiments, and theories surrounding anti-gravity propulsion, highlighting its potential to revolutionize space travel, the challenges in replicating experimental results, and the role of government disinformation and conspiracy theories in the field.

via Freethink|

#anti-gravity #experiments #propulsion

science1 year ago•6 min saved

Researchers Near Breakthrough in Unifying Gravity and Quantum Physics

Researchers are making significant advances in quantum physics with the aim of reconciling it with gravity, a longstanding challenge in physics. New experiments and theories, including testing quantum entanglement via gravity and observing space-time wobble, are promising steps toward understanding whether gravity is quantum in nature. Although many experiments are still in development, the field is entering a new era of potential breakthroughs.

via The Debrief|

#experiments #gravity #quantum-gravity

technology1 year ago•2 min saved

AI-Driven Social Media Platforms Lead to Echo Chambers and Conflict

Researchers at the University of Amsterdam created a social media platform with AI chatbots assigned specific personas and found that, even without algorithms, the bots self-organized into echo chambers based on their beliefs, with partisan content gaining more attention. Various interventions failed to reduce polarization, suggesting social media may inherently reinforce human biases and behaviors.

via Gizmodo|

#ai #chatbots #experiments

science1 year ago•10 min saved

From Theory to Reality: The Journey of Physics Experiments

Steven Prohira, a physicist at the University of Kansas, proposes using trees in forests as detectors for ultra-high-energy neutrinos, instead of traditional antennas. This unconventional idea, inspired by old US Army research, suggests wrapping wires around trees to detect radio waves from neutrino interactions. While still in its conceptual stage, the proposal highlights the innovative approaches needed in astroparticle physics, where natural environments often serve as experimental settings. Prohira's idea, if successful, could advance our understanding of extreme cosmic events.

via Ars Technica|

#astrophysics #experiments #innovation

science1 year ago•2 min saved

Rats Revel in Driving Tiny Cars, Scientists Discover

Researchers at the University of Richmond have trained rats to drive tiny cars, discovering that the rodents not only learn to drive but also enjoy the experience. This experiment, led by neuroscientist Kelly Lambert, provides insights into animal cognition and stress, showing that the anticipation and process of driving can be as rewarding as the outcome. The study suggests that such activities may enhance cognitive functions in rats, offering a lesson for humans about savoring the journey rather than just the destination.

via The Daily Galaxy --Great Discoveries Channel|

#animal-cognition #behavioral-research #experiments

science1 year ago•2 min saved

When Cats Took Flight: Unveiling Gravity's Secrets

In a series of experiments, scientists tested how cats' righting reflexes function in microgravity by using parabolic flights, known as the "vomit comet," to simulate weightlessness. The studies revealed that while the cats' reflexes were impaired without gravity, they still managed partial control over their movements, suggesting the involvement of inertia and proprioception. These findings not only advanced understanding of feline physiology but also influenced astronaut training, as NASA adapted the mechanics of cats' mid-air adjustments to help astronauts maneuver in zero gravity.

via The Daily Galaxy --Great Discoveries Channel|

#cats #experiments #gravity

science2 years ago•10 min saved

"Chasing Ultralight Dark Matter"

Physicists at SLAC National Accelerator Laboratory are preparing to launch new experiments to search for ultralight dark matter, moving beyond traditional candidates like WIMPs and axions. These efforts are part of a broader shift towards smaller, faster experiments to explore a wider range of dark matter possibilities, including light dark matter and ultralight dark matter, which may consist of a family of particles rather than a single type. The Department of Energy's Dark Matter New Initiatives program is funding these innovative approaches, aiming for quicker results in the quest to understand the universe's hidden mass.

via WIRED|

#dark-matter #experiments #particle-physics