It can also lead to diarrhea, loss of appetite, and a risk for infections.â. Hair loss and poor wound healing also can be signs of a zinc deficiency, adds Rachel K. Johnson, PhD, MPH, RD, associate provost and a professor of nutrition at the University of Vermont in Burlington.
projector definition: a person or thing that projects; specif., a machine for throwing an image on a screen, as from a transparent slide or film (noun)... Definitions
An overhead projector is a very basic but reliable tool used to display images onto a screen or wall. It consists of a large box containing a cooling fan and an extremely bright light, with a long arm extended above it. At the end of the arm is a mirror that catches and redirects the light towards the screen.