There are many ways to detect explosives through senses of sight (general appearance and color), and touch (texture, weight per volume).

FORBES: Young Juvenile Makes An Explosive With Baby Powder And Other Tales From The URI Explosives Lab

At the Deutsche Bank head office, employees entering the lobby each day are greeted by a massive videowall that changes in appearance, color scheme or behavior each day.

FORBES: Mesmertising: Making Brand Experiences Stick

Their coats, which had been very uniform in appearance between individual, a silver gray color, suddenly showed great diversity.

FORBES: The Fossils in Our Genes

Holmes had the same bright orange hair color but appeared more lucid Thursday than at his initial court appearance last month.

CNN: SHARE THIS