How red can a red be??

Today's challenge is red and since I've been challenging myself a bit extra by using only B&W-photos during April, this one got a bit tricky.

I asked my boys how I could tackle this and their scientifically brilliant brains came up with the concept of visible spectrum and what wavelength goes with a colour:

Red Light

The visible red light has a wavelength of about 650 nm. At sunrise and sunset, red or orange colors are present because the wavelengths associated with these colors are less efficiently scattered by the atmosphere than the shorter wavelength colors (e.g., blue and purple). A large amount of blue and violet light has been removed as a result of scattering and the longwave colors, such as red and orange, are more readily seen.

(I'll be back-blipping the last three days tonight, and maybe adding a few photos to my Blipfolio when/if I have the energy to go through the 600+ photos I snapped during the weekend).

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Our 30 day-challenge:
1. Reflection
2. Mail
3. In my neighbourhood
4. Movement
5. Tiny
6. Shadow
7. In my purse
8. Egg
9. Pattern
10. Dirty
11. Bizarre
12. Window
13. Written words
14. Relaxation
15. Transportation
16. Red
17. The last thing I bought
18. Hair
19. Summer is here!
20. Bottle
21. Before / After
22. Good times
23. Vegetables
24. I'm thankful for...
25. Breakfast
26. A sign
27. Somewhere I went today
28. At 13:00
29. Circle
30. Emotion