Latent prints are not readily visible to the naked eye. As a result, these hidden prints must be developed in some way to increase their visibility and contrast. The most common method of developing latent prints on nonporous objects is to physically enhance them by applying fingerprint powder.
The Crystal Ball by John William Waterhouse (1902, oil on canvas). Scrying (also called seeing or peeping) is the practice of looking into a translucent ball or other material with the belief that things can be seen, such as spiritual visions, and less often for purposes of divination or fortune-telling.ne method of scrying using a crystal ball involves a self-induced trance. Initially, the medium serves as a focus for the attention, removing unwanted thoughts from the mind in the same way as a mantra. Once this stage is achieved, the scryer begins a free association with the perceived images suggested.
Thomas Jennings, a free-born New Yorker who became a leader of the abolitionist movement, made his fortune as the inventor of a dry-cleaning process called âdry scouring.â Born in 1791, Jennings was 30 years old when he received his patent on March 3, 1821 (U.S. patent 3306x), becoming the first African-American inventor to own the rights to his ...