In 1939, Semyon Davidovich Kirlian discovered that by placing an object or body part directly on photographic paper, and then passing a high voltage across the object, he would obtain the image of a glowing contour surrounding the object. This process came to be known as Kirlian photography. Some parapsychologists, such as Thelma Moss of UCLA, have proposed that these images show levels of psychic powers and bioenergies. However, studies have found that the Kirlian effect is caused by the presence of moisture on the object being photographed. Electricity produces an area of gas ionization around the object if it is moist, which is the case for living things. This causes an alternation of the electric charge pattern on the film. After rigorous experimentations, no mysterious process has been discovered in relation to the Kirlian photography.