Poll Everywhere lets your audience respond using text messages (SMS), Twitter, or the web in real-time. The best part is you can embed live audience responses and live charts right inside your Microsoft PowerPoint presentation, free!

hvad er formlen for bølgehastighed?

Poll responses are kept private

  • Chart?cht=tx&chf=bg,s,00000000&chl=+v%3d%5cfrac%7b%5clambda%7d%7bf%7d&chs=40
  • Chart?cht=tx&chf=bg,s,00000000&chl=+v%3d%5cfrac%7bf%7d%7b%5clambda%7d&chs=40
  • Chart?cht=tx&chf=bg,s,00000000&chl=+v%3d%5clambda%5ccdot+t&chs=40
  • Chart?cht=tx&chf=bg,s,00000000&chl=+v%3d%5cfrac%7b%5clambda%7d%7bt%7d&chs=40
I want to ask my audience this question...