170 likes | 316 Views
What is an Optical System?. What Is an Optical System?. Anything that involves light Used to study how light behaves. Simple Optical System. Observe the Beaker with the water and pencil in it Look at the Beaker from many different vantage points
E N D
What Is an Optical System? • Anything that involves light • Used to study how light behaves
Simple Optical System • Observe the Beaker with the water and pencil in it • Look at the Beaker from many different vantage points • What strange or interesting things can you see involving the image of the pencil?
The pencil is bent There are two pencils There are three pencils The pencil is Magnified When you look straight down into the beaker, the pencil doesn’t seem bent OBSERVATIONS
Refraction/Reflection in a Prism • See Page 112 in the Investigation Guide Handout for written directions • Take out Prism from CPO Optics kit
I can see the X at first When I move my head up and down the X vanishes When the X vanishes the O takes its place This seems to be happening at the same angle, the “magic angle” OBSERVATIONS
Repeat the process for the X and O but instead of the X write your first name. Also write your first name in place of the O but this time underline your name. What information do you now see that can help us explain what is going on? Prismatic Name Enlightenment
I can see my name upside-down When I move my head up and down my name vanishes When myupside-down name vanishes the underlined name takes its place, and it isn’t upside-down any more This seems to be happening at the same angle, the “magic angle” OBSERVATIONS
Time to Experiment • Use a Simple Model- Laser and Prism • Build Upon What You Have Learned – This Magic Angle is Critical to what is going on
Setting Up Laser/Prism Experiment • See Page 113 in the Investigation Guide for written directions • Take out Laser from CPO Optics kit • Use Graph Paper we have provided
The exiting beam exits at a different angle for each trial When I move the laser up the paper, the exiting beam angles more in the downward direction At a certain point the exiting beam disappears This seems to be happening at the same angle, the “magic angle” OBSERVATIONS