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 order to compare and contrast these theories of emotion, it is helpful to first explain them in terms of the interactions between their components: an emotion-arousing stimulus, physiological arousal, cognitive appraisal, and the subjective experience of emotion. According to the James-Lange theory, initially proposed by James and around the same time also by Lange, the stimulus leads to the arousal that leads to the emotion.