In his discussion of color, Michael uncovers fascinating insights about how the human eye and the physical world around us perceive color. He explains that the human eye is capable of distinguishing between a staggering 10 million different colors. Light interacts with the complex structure of the human eye in a way that ultimately determines the colors we perceive.
What color is a mirror?
Michael then delves into a question that may seem straightforward at first glance: what color is a mirror? Although mirrors are often thought of as pure reflectors of light, they do absorb some light. This causes a slight variation in the color of the reflected light depending on what is around the mirror. However, when analyzing the spectrum of light reflected by a typical mirror, it is observed to best reflect light within the 510 nanometer range, which happens to be green light. Therefore, while mirrors might not be entirely green, it is safe to say that they do possess a slight greenish tint.
Building on this discussion, Michael introduces the concept that objects are whatever color they don't absorb. This idea is exemplified by an everyday object like an orange sticky note, which appears orange because it absorbs all colors of light apart from orange. The color orange is the color of light that it reflects back to the viewer's eyes.
"white" and "black"
Expanding on the topic, Michael delves into the origin of the words "white" and "black". Both terms come from the same ancient Proto-Indo-European root word "Bhleg," which meant "shine," "burn," or "flash." This all-encompassing term pertained to both the brightness of the flash and what remained after the burning; different languages interpreted it differently, resulting in distinct words for "white" and "black."
Turning to the blue color of the sky and of blue eyes, Michael emphasizes that it is due to interference rather than absorption of all other wavelengths of visible light. When the sun's light interacts with molecules of air in the sky, longer wavelengths of light are able to slip by while the shorter wavelengths, such as blue light, scatter, creating the iconic blue hue that we see in the daytime sky. This same process occurs in the human eye, where the iris contains a layer that can scatter light similarly to the sky. However, due to an ever-so-slightly different process, this leads to shorter wavelengths being scattered more, giving our eyes a blue appearance. The presence of other pigments within the iris will also cause the eye to appear green, hazel, brown, or other colors.
Michael's explanations and insights provide a more comprehensive understanding of the intricacies behind color perception and the role that light and the physical world play in shaping our perception of color.
Some things you should know
Yes, there are several products that are related to Michael's discussion on color perception. Some of these products include:
Color-Correcting Glasses: Specialized glasses that filter out certain colors of light to help reduce glare and improve contrast, reducing eye strain and fatigue.
Blue-Light Blocking Glasses: Glasses specifically designed to block blue light emitted by screens and other electronic devices that can cause eye strain, headaches, and disrupted sleep patterns.
Computer Glasses: Glasses designed for people who spend a lot of time looking at screens. They are specially designed to reduce glare, filter out blue light, and improve contrast, preventing eye strain.
Light Therapy Boxes: While not specifically related to color perception, light therapy boxes emit a specific wavelength and intensity of light that can help regulate sleep and mood disorders, which can be affected by exposure to too much or too little light.
Colored Contact Lenses: Some people may choose to wear colored contact lenses to enhance or change the color of their eyes, highlighting Michael's point that the color of our eyes depends on the interaction of light with pigments in the iris.
These products and others can play a role in promoting eye health and reducing eye strain and discomfort when working with screens or in other environments that may affect our perception of color.
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