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 helium nuclei, containing two positively charged protons and two neutrally/zero charged neutrons, and therefore have an overall charge of 2+. Protons and neutrons each have a mass of 1 atomic mass unit, and so an alpha particle has a total mass of 4. This high mass of an alpha particle explains how they interact with the human body. They are large and heavy particles and so tend to move slower than other kinds of dangerous radiation. However, because of their large mass, when they do collide with human tissue, they cause more damage.