How do light sources affect what you see?
What will be an ideal response?
When we look at an object, we see a range of tone, according to how much light strikes a particular surface. Because light most often comes from one main source, such as the sun or a lamp in the room, the surfaces of an object toward the light source reflect the most light. Surfaces at an angle to, or away from, the light source do not reflect as much light, so they appear darker. Even when there are several sources of light, one usually dominates the object we are viewing because of the intensity of that light or its proximity to the object we are looking at.
You might also like to view...
Research indicates that the majority of all errors on the job are due to _____ problems.
a. staffing b. communication c. training d. management
Where are marshes located in the United States? What are the three principle kinds of marshes?
What will be an ideal response?
Technician A says that lifting the vehicle and turning the steering wheel may help bleed air out of some systems. Technician B says that if this procedure is used, the wheels should be turned from stop to stop. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
What is the current in Figure 16-1(b) if the diode is made of silicon and the polarity of the source voltage is reversed?
A) 0 A B) 10 mA C) 0.6 mA D) 5 mA