Fuck Yeah Fluid Dynamics

Celebrating the physics of all that flows. Ask a question, submit a post idea or send an email. You can also follow FYFD on Twitter and Google+. FYFD is written by Nicole Sharp, PhD.

Recent Tweets @

A bullet passes through a soap bubble in the schlieren photo above. The schlieren optical technique is sensitive to changes in the refractive index and, since a fluid’s refractive index changes with density, permits the visualization of shock waves. A strong curved bow shock is visible in front of the bullet as well as weaker lines marking additional shocks waves around the bullet. Impressively, the bullet’s passage is so fast (and the photo’s timing so perfect) that there are no imperfections or signs of bursting in the soap bubble. The photo’s caption suggests that the bubble may be filled with multiple gases. If they are unmixed and of differing densities, this may be the source of the speckling and plume-like structures inside the bubble. Incidentally, if anyone out there has high-speed schlieren video of a bullet passing through a soap bubble, I would love to see it. (Photo credit: H. Edgerton and K. Vandiver)

  1. theossiandream reblogged this from the-science-llama
  2. amiable-microbe reblogged this from the-science-llama
  3. manicpanicschmanic reblogged this from existence-is-consciousness
  4. existence-is-consciousness reblogged this from cosmicbeachparty
  5. cosmicbeachparty reblogged this from anengineersaspect
  6. bluescript reblogged this from fuckyeahfluiddynamics
  7. hpangst reblogged this from pop-pop-captain
  8. matrixrefugee reblogged this from consciousburning
  9. pop-pop-captain reblogged this from consciousburning
  10. keep-calm-and-carpe-diem reblogged this from zerostatereflex
  11. consciousburning reblogged this from zerostatereflex
  12. code347 reblogged this from zerostatereflex
  13. zerostatereflex reblogged this from the-science-llama
  14. nirvikalpasamadhi reblogged this from thelighthasgoneoutofmylife
  15. vilmasik reblogged this from the-science-llama
  16. nude-nudibranch reblogged this from the-science-llama
  17. bak3r225 reblogged this from the-science-llama
  18. drweesnaw reblogged this from afightagainstentropy
  19. afightagainstentropy reblogged this from science-in-a-jar
  20. science-in-a-jar reblogged this from abcstarstuff
  21. luvbutts reblogged this from buttflower
  22. hallucinatory-dreams reblogged this from the-science-llama
  23. justamonsternotagod reblogged this from aqueoustransmission
  24. dannythebum reblogged this from buttflower
  25. futurewake reblogged this from aqueoustransmission
  26. xenex reblogged this from aqueoustransmission