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 Decay. An alpha particle[xxi] (a) is a helium nucleus, i.e. does not contain electrons, it is composed of two neutrons and two protons, thus it has a positive two charge. An alpha particle does not have the ability to penetrate through most substances; a piece of paper will stop most alpha particles.