Sunset Blvd - Yancey Boys
Mark Mentzer homage with James on a work-chill session. Start with a twisty tube…put that in a box…
Scientists study the effects of light on plant life cycles in Beltsville, Maryland, August 1953.Photograph by Jack Fletcher, National Geographic
Let’s play a little thought exercise: Which color(s) of light do you think would be better/worse for plant growth? What makes you think that?
Please show your work, and everyone gets an A+ just for trying.
Ok the plant biologist in me can’t help myself. So, white light that comes from the sun or any standard light bulb can be separated into a spectrum of colors (you know, that ROYGBV rainbow we on tumblr love so much.) All these colors have a specific wavelength, violet is around 380-450 nm and increasing on to violet which is around 620-750 nm. But basically what is important here is that light is a form of energy. So how does that relate to plants? Well, plants have some pretty nifty pigments, most notably chlorophyll a, that effectively absorbs light and feeds it into a bad ass pathway that produces energy for the plant. You might know this process as photosynthesis. The thing about chlorophyll a is that it has a particular peak where it absorbs light best. This happens to fall around 430 nm and 660 nm which is roughly blue/violet light and red light. But the light between 495-570 nm is largely unused and instead gets reflected back. I’m sure you can guess what color that is. Yup, green!
Also, ever wonder how leaves in the fall get to be those really cool reds, oranges and yellows? Although chlorophyll a is the predominant pigment in most plants, other pigments are still present and functioning in the plant tissue. In the fall, some trees scale back or shut off photosynthesis almost entirely and chlorophyll a breaks down revealing these other pigments. These other pigments absorb and reflect different colors of light and you get your autumn colors.
In short, plants are fucking awesome
Valid game of block-o complete.
One of my best