presentation – n. an activity in which someone shows, describes, or explains something to a group of people

museum – n. a building in which interesting and valuable things (such as paintings and sculptures or scientific or historical objects) are collected and shown to the public

pigment – n. a substance that gives color to something else

infrared -- n. technical: producing or using rays of light that cannot be seen and that are longer than rays that produce red light

reveal -- v. to make (something) known; to show (something) plainly or clearly : to make (something that was hidden) able to be seen

imaginary – adj. not real : existing only in your mind or imagination

portait – n. a painting, drawing, or photograph of a person that usually only includes the person's head and shoulders

figure – n. a drawing or representation of a person