If you graph a linear function, you get a line. If you graph a quadratic function, you get something called a parabola. A parabola tends to look like a smile or a frown, depending on the function. Check out this tutorial and learn about parabolas!
Green Door Meanings. Green bursts with images of spring, and so green is symbolic of renewal, growth, rejuvenation and transformation. Green is associated with the earth, and can provide grounding energies. Green is also used in holistic healing practices because it promotes physical well-being as well as compassion.
Those 18th-century British architects kept the front hallway somber to recall the color of the stone outside, on the facade. I like the idea of bringing the outside in, but stone doesn't necessarily work for me. I tend to use a sky-bluish color that has a pretty heavy dose of gray and green.. - Steven Gambrel.