1 Dietary supplements, such as vitamin D and probiotics, for atopic dermatitis. 2  Rice bran broth (applied to the skin) for atopic dermatitis. 3  Tea tree oil, either alone or added to your shampoo, for seborrheic dermatitis.  Fish oil supplements for seborrheic dermatitis.
Charged Particle in a Magnetic Field Suppose that a particle of mass moves in a circular orbit of radius with a constant speed . As is well-known, the acceleration of the particle is of magnitude , and is always directed towards the centre of the orbit.
Alpha particles are energetic (fast) helium nuclei, beta particles are smaller and have half the charge, being energetic electrons (or positrons) only the gamma particles are gamma ray photons, i.e., they are not massive particles at all, they are a from of electromagnetic radiation, a form more energetic than X-rays.