A buoyant plume of smoke rises from a stick of incense. At first the plume is smooth and laminar, but even in quiescent air, tiny perturbations can sneak into the flow, causing the periodic vortical whorls seen near the top of the photo. Were the frame even taller, we would see this transitional flow become completely chaotic and turbulent. Despite having known the governing equations for such flow for over 150 years, it remains almost impossible to predict the point where flow will transition for any practical problem, largely because the equations are so sensitive to initial conditions. In fact, some of the fundamental mathematical properties of those equations remain unproven. (Photo credit: M. Rosic)
Long exposure picture of a Lightning Bolt hitting a Tree!
HOLY FUCK THATS COOL
I’m sorry but this is totally fake. First off, from this perspective the lightening would produce an immense amount of illumination, but not at the angles that we see it here. You would literally see the light radiating along the length of the trunk so brightly it would completely obscure it’s shape. Secondly, the bolt would at least emit some sparks at it hits the tree, if not catch it aflame. This is just a night exposure done with colored flashlights with a lightning bolt superimposed over it///
1930’s Teen Delinquents
i.e. life role models
I’m just gonna reblog this again because it’s one of my favorite pictures ever.
That girl in the chair seems like such a badass I bet she was the leader of the crew.
I want to write about these girls.
When I was a teenager my mother found my grandmother’s (her mother) school scrapbook. It included things like photos, notes, and a two page spread of every demerit she ever received over the course of her formal education. Each of them set aside with little tags like she was so fucking proud of them. They were all for things like, “Unladylike behavior” or, “Skirt too short” or, “refuses to listen to authority”. I loved that spread so much.
I always have to reblog this.