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
String theory requires more than the usual three spatial dimensions and one time dimension; it proposes the existence of extra, curled-up spatial dimensions that are too small to observe directly.
elaborate
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
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
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
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