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.
American psychologist William James (1884) and Danish physiologist Carl Lange (1887) independently proposed the oldest theories of emotion at approximately the same time. Their two theories were later combined into what is presently known as James-Lange Theory of Emotion.James and Lange proffer the same point that emotions are results of physiological reactions to external events.he theory basically states that emotion is equivalent to the range of physiological arousal caused by external events. The two scientists suggested that for an individual to feel emotion, one must first experience bodily responses such as increased respiration, increased heart rate, or sweaty hands.