How does color affect heat absorption?

Do you know that different calories and calories will change? The colors are all equal and not endothermic. Please consider black tar of summer without shoes. Wow! It is easier to walk pavement and dirt on the sidewalk with barefoot toes. Why is this?

What do you think about different materials? Do these materials affect the heat of the roof? Why do you think this is?

When light interacts with the object, the light is absorbed, reflected, or transmitted. Black objects absorb light of all wavelengths, white objects reflect all visible wavelengths. They are opposite. Since other colors absorb some wavelengths and reflect on other wavelengths, they look different from human eyes. Color is the result of the wavelength of the light reflected by the object. For example, an object that selectively absorbs yellow light does not look yellow and it is a combination of all other colors in addition to yellow. The color you observe is a supplement to the color absorbed by the object. Please look at the color wheel below

When an object absorbs light, it usually converts light energy to heat. This is what we are paying attention today.

3. Wrap the black exterior paper around the glass and cover the entire outer surface and upper part.

Add water to the glass. Make sure they contain the same amount of water and use the same temperature water on both glasses

9. Measure the temperature of the glass for 2 hours every 15 minutes using a thermometer. Carefully place a small hole in the paper at the edge of the glass and insert a thermometer

11. After 2 hours, create a line graph to track temperature changes of each glass. Temperature is Y axis, time is X axis. Is the glass piece heated faster than other pieces of glass? Have they finally reached the same temperature?

You should have discovered that glass wrapped in black paper eventually uses hot water than white paper. This is because black absorbs more light (hence heat) than white. Obviously, black and white are at both ends of the chromatogram. Please change the color to see how big the color difference is.

How does color affect light absorption? I predict that darker colors will absorb more heat from light and brighter colors will not absorb that much heat. My results support my hypothesis that darker colors absorb more heat and then absorb brighter colors. My results show that light colors like white and yellow have less absorption of heat than red and black. I think that darker colors absorb more heat, not brighter colors, because I always hear people say that they are wearing deeper layers to keep them warm. The more deep the color, the more heat will be absorbed and the color will be thinner. For me it means that they absorb more light from the sun and convert to heat.

Does the color affect the reflection of heat? The color mainly affects absorption and reflection of light. The dark color absorbs a lot of light and converts it to heat. Therefore, dark colors tend to get hot when exposed to light. Bright color reflects most of the light and absorbs less, so absorbed light energy is hardly converted to heat. Black objects outside sunny days are hotter than white ones. Infrared energy is also called thermal energy, and black objects reflect large amounts of infrared energy, so they do not absorb large amounts of heat. If there is another hot object (infrared energy), white objects may absorb a lot of infrared energy and warm up rather than black objects.

Light absorbed by an object is usually converted to heat. The purpose of this project is to measure the amount of heat generated by light absorption of various colors. You will use an incandescent lamp (heating lamp) and a can filled with water wrapped in building paper of different color. By measuring the increase in water temperature, you can measure the amount of light absorbed by each color. Please look through Figure 2 and predict the results before you begin. This figure compares the spectrum of the sun and the spectrum of the incandescent bulb. Incandescent bulbs have more energy in the infrared and infrared (invisible, longer wavelength electromagnetic radiation) region, but the sun has more energy (brightness) in the visible wavelength range (gray region) You will find that you have.