Some times when we look at some objects they appear to be different in color to us than their actual color. It may be due to several wavelength of light with different intensities is striking on our eye.
Remember, white is not a color it is just produced in response to combination of 3 or more than three colors like light.
The three colors that can be combined at full intensity to form a white color are called as primary colors. The most common set is
Red+Green+Blue= white
Zero intensity of each component gives darkest color and full intensity of any component give a white color.
Secondary colors can be produced by the addition of two colors such as;
During exercise, your heart typically beats faster so that more blood gets out to your body. Your heart can also increase its stroke volume by pumping more forcefully or increasing the amount of blood that fills the left ventricle before it pumps.
