B) herman von helmholtz
The trichromatic color theory<span> began in the 18th century, when </span>Thomas Young<span> proposed that color vision was a result of three different </span>photoreceptor cells<span>. </span>Hermann von Helmholtz<span> later expanded on Young's ideas using color-matching experiments which showed that people with normal vision needed three wavelengths to create the normal range of colors. Physiological evidence for trichromatic theory was later given by </span>Gunnar Svaetichin<span> (1956).</span>
Soos (Old Man McGucket in the background)
From Gravity Falls
<span>Registration: A method of correlating color separation so that the colors line up correctly. Press: A device used to transfer an image. Keyblock: A printing block that is used to create a black outline before the color is added, and usually has the most detail.</span>
Answer:
Just go up to him and say hey could we please talk? and if he says yes then tell him how you feel,
Yes im a BOY but ik what to do i had to do it to my gf i have now But Just have HOPE in your self:)
Explanation:
Hope it helps
