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.
The theory of emotion that proposes that physical arousal and cognitive appraisal of a stimulus happen simultaneously is known as the cognitive arousal theory of emotion The theory that we experience emotion first with physical arousal (e.g., increased heart rate, shaky hands), which then leads to awareness of the emotion, is the James-Lange theory of emotion.