Physics facts - Braintasia

Fusion Energy Physics

Fusion reactions power the sun and stars. elaborate

Superconductors Physics

Some superconductors, when cooled below their critical temperature, exhibit the Meissner effect, completely expelling magnetic fields from their interior. elaborate

Terahertz Technology Physics

Terahertz radiation can penetrate many non-metallic materials like clothing and packaging, making it useful for security screening but also potentially for medical imaging. elaborate

Spectra Physics

Spectra, in the context of physics and chemistry, are often unique "fingerprints" for substances. No two substances have exactly the same spectral signature. elaborate

Photonics Physics

Photonic chips, similar to microchips but using light instead of electricity, can process information significantly faster and more energy-efficiently than their electronic counterparts. elaborate

Matter Physics

Most of the matter in the universe is dark matter, which we can't see or directly interact with. elaborate

Time Travel Physics

The grandfather paradox, a classic time travel conundrum, is actually a plot device more than a scientifically sound problem, as it assumes a fixed, linear timeline that might not exist in theoretical models of time travel. elaborate

Particles Physics

Some particles, like neutrinos, can pass through the entire Earth without interacting. elaborate

Light Physics

Light from the sun takes about 8 minutes to reach Earth. elaborate

Relativity Physics

Relativity predicts that time passes slower for objects moving faster relative to a stationary observer – a phenomenon known as time dilation. elaborate

Dimensions Physics

String theory proposes the existence of up to 11 dimensions, most of which are curled up and invisible to us. elaborate

Quantum Physics

Quantum entanglement allows two particles to be linked regardless of the distance separating them, meaning a change in one instantly affects the other – even if they're light-years apart. elaborate

Fields Physics

The Fields Medal, one of the highest honors in mathematics, is awarded every four years and is limited to mathematicians under 40 years old. elaborate

Cosmology Physics

The observable universe is only a tiny fraction of the entire universe, which may be infinitely large. elaborate

Time Physics

There's no single, universally agreed-upon "beginning" of time. Our current understanding of physics suggests a point called the Big Bang, but what, if anything, came before it remains a mystery. elaborate

String Theory Physics

String theory requires more than the usual three spatial dimensions and one time dimension; it posits the existence of extra, curled-up spatial dimensions unseen at macroscopic scales. elaborate

Energy Physics

The energy contained in a single lightning bolt could power a 100-watt lightbulb for over three months. elaborate

Waves Physics

Waves can be found not just in water, but also in light, sound, and even earthquakes. elaborate

Thermodynamics Physics

The efficiency of a heat engine is fundamentally limited by the temperatures at which it operates; you can never completely convert heat into work. elaborate

Quantum Entanglement Physics

Quantum entanglement allows two particles to be instantaneously correlated, regardless of the distance separating them – a phenomenon Einstein famously called "spooky action at a distance." elaborate

Spacetime Physics

Spacetime isn't actually smooth; at the quantum level, it's believed to be "foamy" and incredibly turbulent. elaborate

Wormholes Physics

Wormholes, if they exist, could potentially allow for faster-than-light travel, but traversing one might require navigating exotic matter with negative mass-energy density – a substance we've never observed. elaborate

Gravity Physics

Gravity is not actually a force, but a curvature of spacetime caused by mass and energy. elaborate

Retrocausality Physics

Retrocausality, if true, could mean that future events could influence the past, potentially explaining some quantum entanglement phenomena. elaborate

Tides Physics

Tides can actually affect the Earth's rotation, slowing it down very, very slightly over incredibly long periods. elaborate