Common LED colors include amber, red, green, and blue. There is actually no such thing as a âwhiteâ LED. To get white light, the kind we use for lighting our homes and offices, different color LEDs are mixed or covered with a phosphor material that converts the color of the light. The phosphor is the yellow material you can see on some LED products.
Two-factor theory of emotion. For Herzberg's theory of motivation, see two-factor theory. The SchachterâSinger theory, or two-factor theory of emotion, states that emotion is based on two factors: physiological arousal and cognitive label. The theory was created by researchers Stanley Schachter and Jerome E. Singer.
In the early theories of emotion, there is a distinction between cognition and biological responses as the causes of emotions, as explained in the James-Lange Theory and the Cannon-Bard Theory. On the other hand, there are theories that use two-systems view approach, such as the Schachter-Singer Theory.