The spectra are different. For a hot 'black body' the spectrum covers the whole of the EM spectrum with a peak around the 'red' wavelengths and, for a pigment, the spectrum of reflected (white) light will be a band of wavelengths around the red wavelengths (depending on the quality of the pigment.revv said:
I proved to myself a couple of years ago that there is green light present in a red/orange hot electric stove burner. (≈1500°F / 800°C)sophiecentaur said:
)Oh my.revv said:
Conclusion: Eyeballing intensity levels at different frequencies and is not a good way to quantitatively measure a spectrum. The logarithmic response of the eyes will tend to make every frequency appear to be illuminated with rough uniformity.OmCheeto said:
Run the eye dropper sample tool on your Photo processing program and notice the RGB values on the image. There may be a Luminance option button - or convert to monochrome. That will show you a difference when compared to a white card (in shadow to avoid 255 255 255 saturation)OmCheeto said:
Color and temperature are two distinct properties that can be used to describe an object. Color refers to the visual perception of an object and is determined by the wavelengths of light it reflects. Temperature, on the other hand, is a measure of the amount of heat an object contains.
Color and temperature are related in that they both involve energy. The temperature of an object is related to the average kinetic energy of its particles, while the color of an object is determined by the energy of the light it emits or reflects. For example, a hot object will emit more energy and appear to have a higher temperature and a cooler color, while a cold object will have lower energy and appear to have a lower temperature and a warmer color.
No, there is not a universal color-temperature relationship. Different materials can have different color-temperature relationships based on their unique properties. Additionally, the relationship between color and temperature can also be affected by factors such as surface texture and lighting conditions.
Color is often used to represent temperature in visualizations or displays, such as in weather maps or thermal imaging. This is because humans are able to easily perceive and differentiate between different colors, making it an effective way to represent temperature data. In these cases, a color scale is used to map different colors to specific temperature ranges.
Yes, color can affect the temperature of an object. Different colors will absorb and reflect different amounts of light, which can impact the amount of heat an object absorbs or emits. For example, a black object will absorb more light and heat up faster than a white object, which reflects more light. This is why wearing dark colors in the sun can make you feel hotter than wearing light colors.
