Differences in the purity of light waves

Reference no: EM13502633

1. Evelyn turned the thermostat up from 68 degrees to 70 degrees; however, she doesn't think it feels any warmer and she wants to turn it up even higher. Her roommate thinks that it is now too hot, and she wants to turn the thermostat back down.
Apparently Evelyn has

A. a smaller just noticeable difference for temperature than her roommate does
B. a lower absolute threshold for temperature than her roommate does
C. a larger just noticeable difference for temperature than her roommate does
D. a higher absolute threshold for temperature, compared to her roommate does

2. If the human eye was not responsive to differences in the purity of light waves we would not be able to perceive differences in

A. hue
B. brightness
C. color constancies
D. saturation

Reference no: EM13502633

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