Day 1
Objective:
TLW familiarize themself with the fundamentals of convex lenses
TLW confirm the lens law f = 1/(1/di + 1/do) with a sim
TLW confirm the lens law f = 1/(1/di + 1/do) with a real convex lens
Terms:
lens law, focal length, object, image, refraction
Magnifying an image can be accomplished through the refractive bending of light rays through a convex lens. The shape of the lens is typically represented as the intersection of 2 spheres. The material can be glass, plastic or even water! Before building a microscope it is important to understand the concept of focal length.
* Run the simulation below and measure the object and image distances from the lens (do, di). Gather data for 3 different distance combinations. Calculate and record the value of f ( f = 1/(1/di + 1/do) ) for each of these.
* Next, use a provided magnifying lens with your candle and a meter stick and record the same data, computing the focal length.
* Next class, don't forget your materials: flashlight, foil ...
Day 2
Objective:
TLW create a microscope with water and foil!
* Go outside the classroom and collect things to view* Build your water microscope
* Record your observations
* Stack 2 for greater magnification
Day 3/4
Objective:
TLW build a microscope out of 2 lenses obtained from disposable cameras
Using the collection of things you viewed previously...* Build your disposable camera microscope
* Record your observations
* Save the rest of the cameras for the next unit!