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with F the net force (a vector), m the mass of a particle and a the acceleration of the particle (also a vector) which would be measured by an observer at rest in the frame. The force F is the vector sum of all "real" forces on the particle, such as contact forces, electromagnetic, gravitational, and nuclear forces.
Slow motion computer simulation of the black hole binary system GW150914 as seen by a nearby observer, during 0.33 s of its final inspiral, merge, and ringdown.The star field behind the black holes is being heavily distorted and appears to rotate and move, due to extreme gravitational lensing, as spacetime itself is distorted and dragged around by the rotating black holes.
This is routinely taken into account in particle physics, and many dedicated measurements have been performed. For instance, in the muon storage ring at CERN the lifetime of muons circulating with γ = 29.327 was found to be dilated to 64.378 μs, confirming time dilation to an accuracy of 0.9 ± 0.4 parts per thousand.
For example, in regions of high dark matter density (e.g., the centre of the Milky Way) two dark matter particles could annihilate to produce gamma rays or Standard Model particle–antiparticle pairs. [152] Alternatively, if a dark matter particle is unstable, it could decay into Standard Model (or other) particles.
In Smoothed-particle hydrodynamics, simulations of fluid dynamics are calculated using particles, each with surrounding kernels. For any given particle i {\displaystyle i} , some physical quantity A i {\displaystyle A_{i}} is calculated as a convolution of A j {\displaystyle A_{j}} with a weighting function, where j {\displaystyle j} denotes ...
Marvel's Spider-Man 2 is an action-adventure single-player [2] video game played from a third-person perspective.As with the first game Peter Parker and Miles Morales are the two main characters, with Mary Jane and Venom [3] playable in certain missions, becoming individually playable in accordance with the story as they traverse an open world New York City and fight enemies. [4]
Valve held weekends of free play for Team Fortress 2 before the game was made free-to-play. [212] Through various updates, hats and accessories can be worn by any of the classes, giving players an ability to customize the look of their character, and extremely rare hats named "Unusuals" have particle effects attached to it and are only ...