10/23 & 10/ th Grade Agenda Collect: Reading & Note Taking : p Optical Tools Mirror Lab Video: Eyewitness Vision Class Reading: p. 46 – 49 & HW: Reading Guide Chap 2 & Section 2 Reminder Chap 2 Test on 10/21 & 10/22

Reflection What is the difference between Rods and Cones cells in your eye? (write in complete sentence)

Parts of the Eye

Image is projected up_______ down. Left eye sends the image to the r____ side of the brain. Right eye sends the image to the l____ side of the brain. side ight eft

Rods and Cones Rods responds to lig______ Cones respond to co_____ ht lor

Nearsightedness

Farsightedness

Lasik Operation Reshapes the cornea

Galileo’s Telescope He was the first man to observe the moons of Jupiter and craters on the moons with a telescope in 1608

What is a Refracting Telescope? A telescope that uses convex lenses to gather a large amount of light onto a small area

What is a Reflecting Telescope? A telescope that uses mirrors to focus a large amount of light onto a small area

What is the difference between refracting and reflecting telescope?

What is a Radio Telescope A telescope that uses curved, reflecting surfaces to concentrate faint radio waves from outer space onto small antennas

Four views of the Crab Nebula using different telescopes

Microscope A Microscope uses a combination of lenses to form enlarged image of tiny objects

Electron Microscope Electron microscopes uses electrons instead of light to produce a magnified image

More Optical Illusions

Stare at this for 20 seconds & then stare at a blank piece of paper

Which center circle is larger

Are they moving?

Reflection How does an image appear in a concave mirror? How can you make the image appear upside down in a concave mirror? How does an image appear in a convex mirror?