“The Knowledge Library”

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An Initiative by: Kausik Chakraborty.
06/12/2022 8:27 AM

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“The Knowledge Library”

Knowledge for All, without Barriers…

 

An Initiative by: Kausik Chakraborty.
सदव्यवहार का जादू🟢पैरों के निशान🟢The HOPE Experiment....🟢जुड़वा भाई🟢लकड़ी का कटोरा🟢"मौन की महत्ता" : एक बोध कथा🟢Handling Anger🟢Biology Objective Questions On Different Branches🟢Cell Biology Objective Questions (कोशिका एवं कोशिका विभाजन का वस्तुनिष्ठ प्रश्न)🟢Objective Questions and Answers: Animal Tissue(जन्तु ऊतक) 🟢Objective Questions and Answers Digestive system(पाचन-तंत्र) 🟢Objective Questions and Answers Human Blood (मानव रक्त) Part-1🟢Objective Questions and Answers Human Heart (मानव हृदय) 🟢Objective Questions and Answers Excretion system (उत्सर्जन तंत्र) 🟢Objective Questions and Answers Nervous system (तंत्रिका तंत्र) 🟢Objective Questions and Answers Skeleton system (कंकाल तंत्र)🟢 Objective Questions and Answers Endocrine system (अंतःस्रावी तंत्र)🟢Objective Questions on Mineral Resources of India and World (भारत और विश्व के खनिज संसाधन)🟢MCQ On Energy Resources (ऊर्जा संसाधन वस्तुनिष्ठ प्रश्न)🟢Objective Question on Industry of India (भारत के उद्योग)

“The Knowledge Library”

Knowledge for All, without Barriers……….
An Initiative by: Kausik Chakraborty.

The Knowledge Library

Why Does Your Hair Look Darker When It’s Wet?

What water does do is affect the way light bounces off of your hair. Objects have the color we see because they reflect certain wavelengths of light back to our eyes. The wavelengths correspond to particular colors.
Visible light, also known as “white light,” seems colorless, but it’s actually made up of all the colors mixed together. Each color has its own unique wavelength. Red has the longest wavelength, while violet has the shortest.
If you have red hair, your hair absorbs all of the other wavelengths and only reflects back the red wavelengths to your eyes. People with brown hair have hair that absorbs all wavelengths except brown, and so on with blonde and other hair colors.
When your hair gets wet, though, what happens? The water makes your individual hairs stick close together. The water also forms a thin film on your hair. Both of these occurrences affect the way light bounces off of your wet hair.
Rather than reflecting the same amount of light back to your eyes, wet hair reflects less light back to your eyes. Since your hairs are closer together when wet, they tend to trap and absorb more light. In addition, light that does get reflected back often hits the inside of the thin water film and gets reflected back into your hair, where more light gets absorbed.
When more light is absorbed by your wet hair, less light gets reflected back to your eyes. The result is that your hair appears darker than when it’s dry. Your hair itself doesn’t change, though. All you have to do is let it dry and it’ll be back to its usual color!

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