And that's one of the things I thought I'd do right now.  Oh, before I even turn that on, one of the things that we did about three weeks ago in my class -- this is through the lens, and one of the things we used a lens for was to measure the speed of light.
Si asta ma gandeam sa facem chiar acum  Oh, inainte sa pornesc asta, unul din lucrurile pe care l-am facut in clasa acum trei saptamani-- asta e prin lentile,si unul din experimentele in care folosim lentilele este sa masuram viteza luminii.