of this secondary radiation. In order to study the directionality of this effect, Cerenkov designed the experimental setup illustrated in Figure 2 using a conical mirror that reflected incoming radiation against a photographic plate located above a fluid-filled vessel. Photographs of the reflected light represent cases of ordinary luminescence
A sigil (/ËsÉªdÊÉl/; pl. sigilla or sigils; from Latin sigillum seal) is a symbol used in magic. The term has usually referred to a type of pictorial signature of a demon or other entity; in modern usage, especially in the context of chaos magic, it refers to a symbolic representation of the magician's desired outcome.
A cyst is a closed sac which can be filled with fluid or a semi-solid material. A ganglion cyst is a firm, rubbery mass that usually appears on the front or the side of the ankle, although can exist deeper within the joint. It often appears as a result of a tendon injury.