Can you answer this question?

Join Alexa Answers and help make Alexa smarter. Get started

Science

What color are veins?


1 Answer

Blood is always red. Veins look blue because light has to penetrate the skin to illuminate them, blue and red light (being of different wavelengths) penetrate with different degrees of success. What makes it back to your eye is the blue light, thus making it appear that veins are blue.

{{ relativeTimeResolver(1573494373260) }}

LIVE
Points points 319
Rating 1
Sign-in to view all answers

Similar Questions
Science 3 Answers

Join Alexa Answers

Help make Alexa smarter and share your knowledge with the world

LEARN MORE