Today we had to figure out the distance from our eye to the object on the
wall (the sign). Then we learned how the laser was absorbed by the milky
water. We learned how to convert cm to inches and vice versa. We learned
that light travels in vertical angles. We learned that measurements came
out better when the object was on the line instead of our eyes. We used
fiber optics to see how the light traveled through the fiber. We used the
mirrors and the lasers on the table and lined them up to an exact point on
the wall. We lined them up through the pin-holes on the table. We learned
that liquid nitrogen is 77K and it boils and evaporates at room
temperature. We used the liquid nitrogen to better see the lasers. The
liquid nitrogen when mixed with water left behind cold ice in the bottom
of the metal container. We used calculations, ratios and proportions to
find the distance that we needed to stand for the object to cover the
sign. We learned why blood is red and why it changes colors as you go
deeper in the ocean. We learned that you can tell if a person is alive if
you shine a stong lazer through their ears or nose. Monitors are used on
your ears to observe your oxygen level. 


By:  Dajon Strange + Shatina Jayne W.I.S.E.