Answer: Carotenoids absorb light maximally between 460 nm and 550 nm and appear red, orange, or yellow to sight.

Key Points

• Plant pigment molecules absorb only light in the wavelength range of 700 nm to 400 nm; this range is referred to as photosynthetically-active radiation.
• Violet and blue have the shortest wavelengths and the most energy, whereas red has the longest wavelengths and carries the least amount of energy.

What is the function of the pigment molecules in a light-harvesting complex in the thylakoid membranes? They absorb and transfer light energy to the reaction-center chlorophyll.

As shown in detail in the absorption spectra, chlorophyll absorbs light in the red (long wavelength) and the blue (short wavelength) regions of the visible light spectrum. Green light is not absorbed but reflected, making the plant appear green. Chlorophyll is found in the chloroplasts of plants.

Most pigments work by absorbing certain wavelengths of light. Other wavelengths are reflected or scattered, which cause you to see those colours. The energy of the light is absorbed to excite the electrons, so it is no longer able to be seen by your eye.

Chlorophyll absorbs light most strongly in the blue portion of the electromagnetic spectrum, followed by the red portion.

red light

The color of light DOES affect plant growth, but the effect is more noticeable under low light intensity. Red & blue light are most effective for plant growth, while yellow & green have minimal effect. UV light can damage plants, causing leaves to burn. Growers often use supplemental light to optimize plant growth.

So, can you use any led lights to grow plants? Technically, yes you can use any LED lights to grow plant, but that doesn’t ensure your plants will grow healthy or efficiently, as regular LED lights will not contain enough color or light spectrum which plants need to Photosynthesis.

Plants that receive plenty of blue light will have strong, healthy stems and leaves. Red light is responsible for making plants flower and produce fruit. It’s also essential to a plant’s early life for seed germination, root growth, and bulb development.

Blue promotes root development and strong, stocky plant growth. When you blast your young plants with blue, you prepare them to sustain a ton of buds in the future. Red light, on the other hand, does its best work in the flowering phase. A higher intensity of red promotes a higher yield.

Leaves absorb most red light but reflect or transmit most far- red. Therefore, plants under a canopy (such as under hanging baskets) or lower leaves of plants spaced closely receive a greater proportion of far-red than red radiation.

red light is highly effective at regulating growth and development for plants . Red light helps to flower and fruit and prolong flowering.It can greatly enhance the photosynthesis of plants and promote the growth of plants.

Light from electronic screens comes in all colors, but the blues are the worst. Blue light fools the brain into thinking it’s daytime. When that happens, the body stops releasing a sleep hormone called melatonin. Melatonin is nature’s way of helping us wind down and prepare for bed.

If you are using your phone constantly — especially if you use it primarily for texting, emailing and web browsing — a convenient way to reduce your blue light exposure is to use a blue light filter. Digital electronic devices emit blue light that can cause eye strain and may lead to eye problems over time.

Manually turning your blue light filter on and off is fine, but there’s a better way to go about things — setting it up on an automatic schedule! Swipe down from your home screen to access your notification tray.

That’s because blue light stimulates your brain and fools it into thinking it’s daytime, potentially keeping you awake if you use your device before bedtime. Many Android devices also offer a built-in Blue Light feature, and a variety of third-party utility apps get the job done, too.

Warm light is best for the eyes. This includes filtered natural light and light produced by incandescent and LED light bulbs. Spread out lighting in your home and workspace to ensure sufficient lighting.

Red light therapy is generally considered safe, even though researchers aren’t exactly sure how and why it works. And there are no set rules on how much light to use. Too much light may damage skin tissue, but too little might not work as well.

Green, the mixture of blue and yellow, can be seen everywhere and in countless shades. In fact, the human eye sees green better than any color in the spectrum.

Most Attractive Hair and Eye Color Combinations

• Brown hair and light hazel eyes.
• Red hair and dark blue eyes.
• Brown hair and green eyes.
• Black hair and purple eyes.
• Blond hair and dark brown eyes.
• Brown hair and blue eyes.
• Black hair and green eyes.
• Red hair and green eyes.

Change the color of your screen, the easiest color on your eyes can be dark text on a light background. For example, your eyes can be at their maximum comfort if you use a black colored text on a white background.

Using dark mode is helpful in that it’s easier on the eyes than a stark, bright white screen. However, using a dark screen requires your pupils to dilate which can make it harder to focus on the screen. When your pupils constrict under bright light, your vision sharpens.