fuckyeahfluiddynamics

fuckyeahfluiddynamics:

Atomization is the process of breaking a liquid into a spray of fine droplets. There are many methods to accomplish this, including jet impingement, pressure-driven nozzles, and ultrasonic excitement. In the images above, a drop has been atomized through vibration of the surface on which it rests. Check out the full video. As the amplitude of the surface’s vibration increases, the droplet shifts from rippling capillary waves to ejecting tiny droplets. With the right vibrational forcing, the entire droplet bursts into a fine spray, as seen in the photo above. The process is extremely quick, taking less than 0.4 seconds to atomize a 0.1 ml drop of water. (Photo and video credit: B. Vukasinovic et al.; source video)

insatiable-patriotism

The meaning of sacrifice.

j-wolf-harding:

"When a soldier was injured and could not get back to safety, his buddy went out to get him, against his officer’s orders. He returned mortally wounded, and his friend, whom he had carried back, was dead.

The officer was angry. ‘I told you not to go,’ he said. ‘Now I’ve lost both of you. It was not worth it.’

The dying man repied, But it was, sir, because when I got to him, he said, ‘Jim, I knew you’d come.’”

- Leslie D. Weatherhead.