Articles tagged with Experimentation
Mammals underwent rapid 'burst' of evolutionary change in the mid-Jurassic, producing characteristic body shapes that remained recognisable for tens of millions of years. This period of radical change produced up to 8 significant changes per million years, compared to 1-2 at the end of the Jurassic.
Scientists at Princeton University have discovered Weyl fermions, a massless particle theorized 85 years ago. The particle could enable nearly free and efficient flow of electricity in electronics, leading to greater power for computers.
Researchers have confirmed plutonium's magnetism using neutron scattering, resolving a scientific mystery that had gone unsolved for seven decades. The discovery provides insight into plutonium's unique electronic properties and suggests new avenues for materials science applications.
Scientists at ANU performed John Wheeler's delayed-choice thought experiment, proving that measurement is everything in quantum physics. The experiment found that reality only exists when observed, confirming the validity of quantum theory and its predictions about interference.
The Edmond and Lily Safra Philanthropic Foundation has donated $30 million to the Hebrew University's Edmond and Lily Safra Center for Brain Sciences, bringing the total funding to $50 million. The center will continue to grow and recruit top researchers to advance brain research and development.
Experimental data from zero-gravity experiments on the International Space Station provides insights into thermodiffusion effects in ternary liquid mixtures. The results, published in the European Physical Journal E, offer a benchmark for future theoretical and numerical models.
Canada's Province of Ontario has implemented successful education reform initiatives through cooperation and experimentation, with an emphasis on inclusivity. Key findings include the importance of feedback from diverse stakeholders, inclusive policies for native peoples, and addressing out-of-school problems.
Researchers discovered californium's unique properties, linking it to surrounding elements and enabling bonding and separation with other materials. The element's significance lies in its potential applications for nuclear fuel storage and recycling.
The article features five physics demonstrations that showcase the importance of experimentation in the science classroom. The experiments, described by Neil Downie, a Royal Academy of Engineering visiting professor, allow students to get creative while learning fundamental physics principles.
Physicists harness superradiant state to study dynamic phase transitions, mirroring water cycle and Higgs field condensation. The experiment introduces a controlled coupling to the environment, expanding scope for understanding imperfect crystallization and defects.
Scientists have devised a combination of new experiments and better theoretical modeling to settle the dispute between experimental and theoretical scientists. The new results are consistent with the hypothesis that microbial nanowires possess metallic-like conductivity, contrary to previous models.
A team of MIT mathematicians developed a theory predicting wrinkled patterns on curved surfaces, confirmed through experiments. The theory states that curvature is the main parameter determining pattern formation, with thicker shells forming hexagonal patterns and thinner shells resulting in labyrinthine configurations.
Researchers at Aalto University and the University of Zurich have successfully imaged electron interactions in a single molecule. The study reveals exotic effects that were previously neglected, shedding light on device performance.
A study conducted by Sam Houston State University and the Houston Police Department found that no single method of eyewitness identification is more reliable than others. The experiment tested four different methods, including sequential and simultaneous presentations, and revealed surprising consistency in results.
York University researchers found that reminding people of their religious beliefs promotes less hostile reactions in threatening situations. The study involved nine experiments with 910 participants and consistently supported the hypothesis across different religions.
Researchers advocate for massive online laboratories to prevent errors and fraud in life sciences research. These online labs use videogames to engage non-professional investigators and promote transparency, reducing the risk of scientific fraud and cherry-picking.
A study led by Atika Khurana found that adolescents with strong working memory are less likely to engage in impulsive drug-use behaviors. Weaknesses in executive functioning often underlie self-control issues in children as young as 3 years old, making targeted interventions crucial for early prevention.
Rensselaer researchers predict the electrical response of metals to extreme pressures, which could benefit computer chip design. The study found that specific pressure decreases electrical resistance in different materials.
Researchers recreated space-like conditions in a laboratory to study the formation of beam-like jets, confirming a proposed mechanism through experimental results. The experiment used extreme laser powers to create supersonic plasma flows, which interacted to sharply collimate an iron plasma flow.
Researchers have developed a new methodology to measure brain activity in newborns and children, particularly those born prematurely. The technique uses Event-Related Potential (ERP) and is child-friendly, allowing for the investigation of cortical processing of touch and speech sounds.
Researchers have found that properly designed rough surfaces can reduce skin-friction drag in turbulent conditions. The study models fluid flow between two surfaces covered with tiny ridges, which trap air bubbles and create a hydrodynamic cushion.
A new study published in the American Journal of Preventive Medicine found that beliefs about e-cigarettes' safety may increase experimentation rates among young adults. Researchers surveyed 1379 participants and found that those who believed e-cigarettes were less harmful or a quit-smoking aid were more likely to try them.
A new study from Columbia Business School reveals that waiting for a discounted product can significantly reduce consumer enjoyment. Retailers can add value by offering in-store promotions and instant gratification to their customers.
Researchers Nathan Isert and colleagues use diamagnetic levitation to study coarsening behavior of foams with varying liquid fractions. They experimentally verify decades-old theoretical predictions for bubble size growth in dry and liquid foams.
The cantilever technology measures drug-bacteria interactions in real-time, detecting rupturing of individual hydrogen bonds and resolving forces of ~10 pN. It offers a sensitive alternative for drug experimentation and early detection of infectious diseases.
A team of researchers has carried out the first detailed measurements of a unique kind of magnetism found in herbertsmithite. The study reveals a signature in the material's optical conductivity that supports theoretical predictions about the influence of magnetism on electrons.
Researchers confirmed Haldane's 90-year-old theory that new genes may get lost from populations but found it cannot predict the ultimate fate of beneficial alleles. Genetic diversity can be maintained indefinitely through complex population dynamics.
Researchers have explored iron-doped zirconia, bridging the gap between theoretical predictions and experimental measurements. The study found that oxygen vacancies play a crucial role in providing its unique electronic and magnetic properties.
An interdisciplinary team has successfully depleted electrons from the bulk of topological insulators, demonstrating superconducting surface states. This breakthrough enables experimentation with TIs and paves the way for investigating the Majorana quasiparticle, a fermion that could serve as a quantum bit in quantum computing.
Researchers at Technical University of Munich created a numerical model to study complex fluids, such as ketchup, which exhibits unusual behavior when shaken. The model explains the effects of long-chained polymer molecules on flow resistance, providing new insights into the microscopic mechanisms driving these phenomena.
Researchers create entangled pair of photons with 50m and 144km separation, demonstrating non-causal quantum eraser effect. The choice of measurement on one photon determines the wave-like behavior of its twin, regardless of distance or time.
Recent NIST experiments suggest that QED may not accurately account for the behavior of atoms in exotic states. The research found that highly charged ions exhibit different photon emission colors than predicted by QED, sparking further investigation.
The Journal of Visualized Experiments has established a Librarian Advisory Board to foster collaboration between academia and hospitals. The board aims to shape the JoVE platform's content and distribution strategy.
A study by University of Exeter researchers found that the demise of one carnivore species can indirectly cause another to become extinct due to ripple effects on a food web. This supports growing evidence against 'single species' conservation approaches, favoring instead ecosystem-centric strategies.
A mathematical model reveals that multiple mechanisms of microRNA regulation are manifestations of a single biochemical reaction, proposing a simple yet efficient way to control protein production. The findings aim to resolve the decade-long debate and pave the way for future experiments to verify the hypothesis.
The Navy's Universal Gateway collapses 30 network connections into a single portal, automating data integration and enhancing information assurance. This improves the accuracy of real-time information for warfighters, reducing errors and increasing efficiency.
A study by Dr Tim Fawcett and Dr Andrew Higginson found that articles with many equations are seldom referenced, highlighting the importance of clear communication between theory and experiments. The authors recommend improved mathematical training for science graduates to overcome this barrier.
A Caltech study finds the CMS auction system falls short of expectations, leading to low-ball bids and few companies able to afford the items. The experimentally tested auction structure shows that eliminating two unorthodox rules can improve efficiency, but it may still face challenges.
The Kavli Institute for Theoretical Physics at UC Santa Barbara has received two new grants to advance its interdisciplinary biology initiatives. The grants, totaling $2 million, will support workshops, postdoctoral fellowships, and a new summer program aimed at the interface of physics and biology.
The Scripps Research Institute has proven the plausibility of a new pathway to life's essential sugars called the glyoxylate scenario, potentially pushing past the formose reaction hurdle. This alternative pathway, led by Ramanarayanan Krishnamurthy, reveals efficient conversion of DHF and glyoxylate to ketoses.
Researchers devise a new Bell test to reveal correlations between high-energy particles, shedding light on 'spooky action at distance.' The study's findings have significant implications for understanding particle physics and the link between symmetries and particle correlations.
Theoretical chemists at Emory University have solved an important mystery about the rates of chemical reactions and the Polanyi rules. They found that a pre-reactive long-range force can align the reaction of a chlorine atom with methane, inhibiting the reaction. The research has implications for the development of cleaner fuels.
The article discusses how modern computer technology has expanded the ability to discover new mathematical results, enabling the exploration of complex patterns and relationships. Computer simulations have been used to explore various mathematical problems, including Giuga's Conjecture, providing empirical evidence in favor of its truth.
Researchers have resolved a long-standing debate over water molecules at the air-water interface, finding strong hydrogen bonding between water pairs at the outermost surface. The study uses theoretical and experimental techniques to pinpoint the origin of water's unique surface properties.
A study by Columbia Business School researchers demonstrates 'complicating choice' – the process where decision-makers increase effort for unimportant attributes. This phenomenon is driven by the 'effort compatibility principle', which aims to match expected effort with perceived effort.
A £4.5m research project led by Queen Mary University of London aims to transform invisibility science into practical technology using spatial transformations. The project will focus on developing practical applications for communication, wireless energy transfer, sensors, and security.
Researchers compare theory with data from STAR experiment to establish the temperature boundary where ordinary matter and quark-gluon plasma cross over. The team also finds that the highly dynamical systems of gold-gold collisions achieve thermal equilibrium.
A Johns Hopkins University study reveals that two identical beads dropped into a turbulent flow will follow different and random paths. The phenomenon, called 'spontaneous stochasticity,' suggests that even everyday particles can behave randomly in chaotic flows.
Researchers at Oregon State University have experimentally confirmed the presence of the rotational Doppler effect in individual molecules for the first time. The finding has implications for understanding molecular spectroscopy and high-energy electron studies.
Researchers at TU Delft have discovered that a moving bicycle can remain stable without relying on traditional gyroscopic or caster effects. By analyzing the dynamics of bicycle motion, they found a new approach to achieve self-stability.
A clinical study suggests that a specific combination of nutritional ingredients, including indole-3 carbinol and vitamin D, may increase the mean urinary concentration of 2-OHE in pre- and post-menopausal women by 110% and 88%, respectively. The supplement was well-tolerated with no adverse side effects.
Research by Geoff Hilton found that video production improved student understanding of scientific concepts, particularly when rehearsing for an audience. The study revealed that students who created videos showed better learning outcomes compared to those who produced written posters.
A Syracuse University chemist has developed a way to use THz light waves to study weak forces between molecules in crystals, which could help predict crystal structures of pharmaceuticals. The technique combines THz experiments with computational models to refine theoretical predictions.
Researchers found that rapid growth and wrinkling at the periphery of petals create stress within the bud, forcing it to open. This contradicts earlier theories about flower blooming, but supports a theory proposed by German literary master Johann Wolfgang von Goethe.
The US Department of Homeland Security has signed a 5-year, $16 million contract to expand and improve the DETERlab testbed at USC's Information Sciences Institute. The new project, DETECT, aims to advance cybersecurity research and provide a controlled environment for scientific inquiry.
Researchers develop an online game, EteRNA, that uses crowdsourcing and game play to design and validate molecules of RNA. The game is integrated with Facebook and scores players based on how well their virtual designs can be rendered as physical molecules.
A team of scientists at Duke University has measured the viscosity of an ultra-cold gas, confirming its potential as a scale model for exotic matter and high-temperature superconductors. The results also provide insight into predictions made using string theory.
Empa researchers have successfully fabricated small fragments of graphene, known as nanographenes, using a surface chemical route. The reaction pathway consists of six steps with five intermediate products, which can be stabilized on semiconductor surfaces, enabling the fabrication of tailored nanographenes.
Scientists at TUM create a versatile biophysical model system to investigate complex systems and their properties. They report finding that when density crosses a threshold, actin filaments begin to move collectively, resembling flocks of birds or shoals of fish.
David Hanneke's research created a building block of quantum computing, performing what some call the most accurate experiment in science. He will receive the Michelson Postdoctoral Prize at Case Western Reserve University.