1 The comet it had met was itself a visitor from the outer limits of the solar system and the dust particle it shed, and which Stardust caught, have been untouched since the Solar System formed billions of years ago.
2 The teacher is showing how an electron, a negatively charged subatomic particle, to move in such condition.
3 The observed particle is the heaviest boson ever found, said Joe Incandela, spokesman for one of the experiments at CERN, at a seminar yesterday at its Geneva headquarters.
4 Scientists announced Thursday that the particle discovered through experiments at atom-smashing large hadron collider last summer is, in fact, the long-sought Higgs boson.
5 He choked on a particle of food.
6 The collision of the particles resulted in an exchange of energy and a change of direction.
7 But, on rare occasions, microscopic metal particles can lead to a short circuit within the cell, causing overheating and potentially flames.
8 The rate of flow of fluid, particles, or energy through a given surface.
9 The gaps between the teeth trap food particles.
10 The next refinement is to take into account that the luminous screen is typically round: any alpha particles striking outside the round area will not be visible.
11 They are a kind of air pollution called particles or particulate matter.
12 But, on rare occasions, in their words, microscopic metal particles can lead to a short circuit within the cell, causing overheating and potentially flames and that is a sober statement for anyone using a Sony-powered computer.
13 The magnetosphere is the region of electrically charged particles that are trapped in the magnetic field of the planet.
14 The dust particles from the comet have been untouched since the Solar System formed billions of years ago.
15 These fires create convection funnels, and throw a lot of particles into the upper atmosphere.