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  • HW 78620
    • Stargazers >
      • Next Night Observation Notes >
        • March 3, 2023 Notes
        • March 10, 2023 Notes
        • March 17, 2023 to be added
      • Frequently Asked Questions >
        • How do you set up your night sky observation sessions?
        • Explain why there are four sunrises/sunsets?
        • What are the fundamental motions of the night sky?
        • Explain magnitude of night sky objects?
        • What is a constellation?
        • Star Enlightenment
        • Moon Enlightenment
        • Have you ever gone into space, Mr. Konichek?
        • Do you have some Earth orbiting the sun stories?
        • Woman's image on Moon?
      • Aniruddh Nayak's Photos
      • Paul's 12" Telescope Photos
      • Kinesthetics >
        • Planets PM or AM h-above
        • Earth/Sun & times of day
        • Moon Proof that it spins on axis
        • Earth / Moon perigee & apogee
        • Sun / Earth Seasons, Zodiac Sign
      • Activities - Hands On >
        • Celestial Sphere with fruit
        • Constellation Puzzles - h-above
        • Outdoor solar system walk
        • Bugs Bunny What's Up Doc
        • Stars on Ceiling Kit
        • 13 constellations on the ecliptic?
    • Field Camera Critters >
      • bobcat
      • Porcupine
      • Two different at same time
      • Coyotes
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  • PHYSICS
    • Year Round Physics Pages >
      • Calendars 2013-2014 >
        • Calendars 2012-2013
      • Physics Textbooks Online
      • How to do a Lab Report
      • How to Graph in Excel
      • GNATS >
        • Infinities
    • Vectortines & Astrotines Day Video - Normal Pre-school morning
    • Physics 1st Quarter 2012-2013 >
      • Unit 1 Motion (1st half) >
        • Sept. 3 Welcome & Intro
        • Sept. 4 Bernoulli >
          • 2013-14 videos
        • Sept 5 Intro to Motion
        • Sept. 6 GREAT RACE
        • Sept. 9 Review Great Race
        • Sept. 10 Physics 500
        • Sept. 11 Graph Your Route
        • Sept. 12 Measurement Lab-Day 1
        • Sept. 13 Measurement Lab-Day 2
        • Sept. 16 Sonic Ranger-Day 1
        • Sept. 17 Acceleration
      • Unit 1 Motion (2nd half) >
        • Sept. 18 Sketch-A-Graph
        • Sept. 19 Fab Five
        • Sept. 20 Rocket Lab
        • Sept. 23 Homework Gravity
        • Sept. 24 Law of Falling Bodies
        • Sept. 25 Freefall Terminal Velocity
        • Sept. 26 Parachutes
        • Sept. 27 Parachute Competition
        • Sept. 30 Review
        • Oct. 1 TEST
        • Oct. 2 Review Awards
      • Unit 2 Acceleration (1st half) >
        • Oct. 3 Factors of Acceleration Lab-Day 1
        • Oct. 4 Factors of Acceleration Lab-Day 2
        • Oct. 7 Donatello, B & B Lab, Prob.
        • Oct. 8 Who Pushed That Speeding Truck? Lab
        • Oct. 9 Inertia Homework
        • Oct. 10 Push That Cart Lab
        • Oct. 11 Push That Cart Lab-Day 2
      • Unit 2 Acceleration (2nd half) >
        • Oct. 14 Tablecloth Videos, Inertia
        • Oct. 15 Friction is Fun Lab-Day 1
        • Oct. 16 Friction is Fun Lab-Day 2
        • Oct. 17 Friction Theories
        • Oct. 18 2013 Hovercraft
        • Oct. 18 2012 Hovercraft 1,2,4,5
        • Oct. 18 2012 Hovercraft 5,7,8
        • Oct. 21 Review
        • Oct. 22 TEST
      • Unit 3 >
        • Oct. 23 Infinities (GNATS2)
        • Oct. 24 Page 1 Action-Reaction
        • Oct. 24 Page 2
        • Oct. 25 Action-Reaction
        • Oct. 28 Vectors- Where Am I?
        • Oct. 29 Addition of Vectors Lab-Day 1
        • Oct. 30 Addition of Vectors Lab-Day 2
        • Oct. 31 Vector Homework
        • Nov. 1 Resolution of a Force Lab
    • Physics 2nd Q >
      • Unit 3 Continued >
        • Nov. 4 Plane Application
        • Nov. 5 Ship application
        • Nov. 6 Weight of the World Lab
        • Nov. 7 Parking on a Hill Lab
        • Nov 8 Vector Bowling 2013 >
          • Nov. 8 Vector Bowling 2012
        • Nov. 12 Fundamental Forces
        • Nov. 13 Review
        • Nov. 14 TEST
      • Unit 4 >
        • Nov. 18 Bull's Eye Lab
        • Nov. 19 Projectile Hunter
        • Nov. 21 Trajectory Lab-Day 1
        • Nov. 22 Trajectory Lab-Day 2
        • Nov. 23 Hot Wheels Jump Through the Burning Ring of Fire
        • Nov. 25 Paper Rockets & Make Up Day 1
        • Nov. 26 Launch Day & Make Up Day 2
        • Dec. 2 Review for Unit 4 Test on Proj. Motion
        • Dec. 3 TEST 2D Motion Unit 4
        • Dec. 4 Early Release Day
      • Unit 5 >
        • Dec. 5 Circular & Harmonic Motion
        • Dec. 6 G on an Egg Lab
        • Dec. 9 Gravitation
        • Dec. 10 Zero G???
        • Dec. 11 Airplanes Airplanes Lab
        • Dec. 12 Circular HW
        • Dec. 13 Pendulum Lab
        • Dec. 16 Hooke's Law Lab-Day 1
        • Dec. 17 Mass on a Spring
        • Dec. 18 Review
        • Dec. 19 TEST
        • Dec. 20 Tops & Spinners
      • Unit 6 >
        • Jan. 2 Egg Design and Building
        • Jan. 3 All-American Egg Drop
        • Jan. 6 no school due to cold 2014 but momentum 2013
        • Jan. 6/7 cold day off 2014/Impulse 2014 Impulse-Momentum 2013
        • Jan. 7 cold day off 2014 but Center of Mass 2013
        • Jan. 8 Impulse 2014 but Center of Mass cont. 2013
        • Jan. 9 Stability 2014 but Conservation of Momentum Lab-Day 1 2013
        • Jan. 10 Center of Mass 2014 but Conservation of Momentum Lab-Day 2 2013
        • Jan. 13 Conservation of Momentum 2014 but Review 2013
        • Jan. 14 Conservation of Momentum 2014 TEST 2013
        • Jan. 15 Scavenger Hunt collection 2014 but OMIT Awards 2013
        • Jan. 16 FINALS (Odd hours)
        • Jan. 17 FINALS (Even hours)
    • Physics 3rd Q >
      • Unit 7 >
        • Jan. 22 Walking on Broken Glass Demo (Pressure, Work)
        • Jan. 23 Energy of Collisions
        • Jan. 24 Laying on a Bed of Nails, PE = mgh
        • Jan. 27 Pile Driver Lab
        • Jan. 28 Joules in a Calorie Lab
        • Jan. 29 How Fast Can You Work? Lab
        • Jan. 30 Power Tube Roll-off
        • Jan. 31 Alka-Bomb Testing
        • Feb. 3 Conservation of Energy
        • Feb. 4 Conservation of Energy
        • Feb. 5 Loop the Loop Lab
        • Feb. 6 Conservation Problems
        • Feb. 7 Dart Gun Lab
        • Feb. 10 Finish home work sheet
        • Feb. 11 Ballistic Pendulum
        • Feb. 12 Review
        • Feb. 13 Test - Energy
        • Feb. 14 Infinities
        • Feb. 14 Mt. Aconcagua
      • Unit 8 >
        • Feb. 18 Magnetism
        • Feb. 19 Magnetism
        • Feb. 20 Electromagnetism
        • Feb. 21 It Can't Work Lab
        • Feb. 24 Electrostatics
        • Feb. 25 Charging/Van de Graff
        • Feb. 26 Static uses
        • Feb. 27 Get a Charge Lab
        • Feb. 28 Coulomb/Millikan Oil Drop
        • Mar. 3 Electrophorus/Wimshirst
        • Mar. 4 Lightning
        • Mar. 5 Leyden Jar
        • Mar. 6 Capacitors
        • Mar. 7 Superconductivity >
          • Capt. Jenkins demo's bottom of Mar. 8
        • Mar. 10 Review
        • Mar. 11 TEST
      • Unit 9 Relativity & Waves >
        • Mar. 12 Relativity
        • Mar. 13 Relativity
        • Mar. 14 Relativity
        • Mar. 17 Waves
        • Mar. 18 Slinnnnnnky Interference
        • Mar. 19 Wave Machine
        • Mar. 20 Hot Sounds
        • Mar. 21 Resonance
    • Physics 4th Q >
      • Unit 9 Continued >
        • Mar. 31 Speed of Sound Lab
        • Apr. 1 Sound of Music
        • Apr. 2 Sound of Music
        • Apr. 3 Doppler Polarization
        • Apr. 4 Laser
        • Apr. 7 Holography
        • Apr. 8 Review
        • Apr. 9 TEST
      • Unit 10 Reflection Unit >
        • Apr. 10 TCOB Awards
        • Apr. 11 Reflection
        • Apr. 14 Draw Your Face Lab
        • continue >
          • Apr. 28 Illusions/Review
          • Apr. 28 Review/Illusions Cont.
          • Apr. 29 TEST
          • April 30 Pre-Great America
          • May 1 Physics Great America
          • May 2 Review PGA
        • Apr. 15 Parallax Blue Skies Scattering
        • Apr. 16 Reflection Lab parts 1 &2
        • Apr. 17 Part 3 of Reflection of Light Lab and Magic Cylinder
        • Apr. 21 Light Bulbs/LUX/LM/Blue Moon
        • Apr. 22 Concave Mirrors
        • Apr. 23 Convex Mirrors
        • Apr. 24 Ripple Tank Lab-Day 1
        • Apr. 25 Ripple Tank Lab-Day 2
      • Unit 11 Refraction Unit >
        • May 5 Refraction Unit Day 1
        • May 6 Refraction Effects - The Eye
        • May 7 Refraction Lab Day 1
        • May 8 Refraction Lab Day 2
        • May 9 Ray Diagrams
        • May 12 2 WAY MIRROR & HMWK
        • May 13 Lens Lab
        • May 14 Total Internal Reflection (TIR)
        • May 15 Rainbows/Mirages
        • May 16 3-D & Refraction Effects
        • May 19 Review
        • May 20 Test
        • May 21 Go Over Test
        • May 22 Senior's Last Day
      • Final Stuff >
        • May 23 Rocket Project Physics
        • May 27 Rocket Project Physics
        • May 28 Rocket Project Physics
        • May 29/30 Rocket Project Physics
        • June 2/3/4 Launch!
      • Videos 2011-2012 >
        • Period 1
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          • Unit 8: Electrostatics, Magnetism, and Superconductors
          • Unit 9: Waves, sound, polarization, holograms
          • Unit 10 reflection of light and ripple tank
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    • AP PHYSICS B >
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      • Mechanics >
        • Sept 10 Dimensional Analysis
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      • Chap 13 Simple Harmonic Motion, Waves
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      • Chapter 18 DC Circuits
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      • Chapter 20.1-20.3 Induced Voltages and Inductance
      • Chapter 27 Quantum Physics
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      • Bull's Eye Lab the AP Way
      • Plover Water System Videos
      • 3rd Q >
        • Jan. 29 - Dot Product, Cross Product, Magnetic Flux
        • Jan. 30 - Faraday's Law
        • Jan. 31 - Motor Demos and CH 20 review
        • Feb. 1 - Practice Mech Exam
        • Feb. 4 - Review Practice Mech #1
        • Feb. 5 - Generators, RL Circuits
        • Feb. 6 - Demos with AP-B
        • Feb. 7 - Chapter 20 Hmwk and Practice Exam Work Day
        • Feb. 8 - Practice Exam Problems
        • Feb. 11 - What is AP Looking For?
        • Feb. 12 - Coulomb's Law
        • Feb. 13 - Short Day
        • Feb. 14 - Practice Problem #3 and 15.4-15.6
        • Feb. 15
        • Feb. 18
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      • writing references
      • Forces on an Incline Plane
      • Resolution of a Force
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      • Mr. Bill Jenkins Transit Day Pictures
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      • Jan 22 GNATS 1 FUN MOTIONS of THE SKY
      • Jan 23 GNATS 2 IMPROVED CALENDAR
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                        Blue Skies and Parallax Day

If you missed today, this is what we accomplished:  In 2013-2014 we had the power out all of period 1 and most of period 2 and all science teachers were pulled periods 7th and 8th with substitutes so periods 7 & 8 were shown how to do the lab yesterday so everyone actually completed the lab (Images, Images, Images) today.  Most turned in the lab today but it is due tomorrow for 8 points in Mr. Konichek's classes.  I am looking for all labeling done in the first sketch (image, object, image distance S sub o and object distance S sub i measured and labeled, and the angle of incidence and angle of reflection measured and labeled, AND arrows showing the path the ray of light took from the object to the mirror and then the reflection to your eye also labeled.

1.  We broke up into our lab groups from yesterday and finished yesterdays lab (images images images) but with understanding the Physics behind each part:

Part 1 Discovering the path a ray of light would have to take to see one point of the image.  Note the following part 1 diagram done on the Smart Board period 1:  Part 1 Diagram  note the brain takes the light it sees straight to the image so that line has to be drawn from the eye to the image in back of the mirror first.  Then a ray of light has to be coming from the object to the spot on the mirror where the line you just drew (from the eye to the image) intersected the mirror.  This ray from the object reflected off the mirror to your eye.  Now drawing a perpendicular (a normal) you measure the two angles noticing the angle of incidence (between the normal and the ray from the object to the mirror) equals the angle of reflection (between the normal and the ray to your eye).  You also connect a point on the object to the corresponding point on the image (I connected the centers of the object and image) and notice the shortest (perpendicular) distance to the mirror from the object point and the image point are equal.  Thus the two laws of reflectiion:  distance of object = distance of image and angle of incidence = angle of reflection.
Part 2 Note the diagram for part 2: from period 1 smart board notes.  When two mirrors are at right angles you see three images in the two mirrors.  One image comes from each of the two mirrors like in part 1 (distance of object = distance of image for each mirror) but where does that 3rd image come from.  Note I placed an eye, traced a ray from the eye to the 3rd image, reflected the spot the ray hit the mirror (so the angle r = angle i)and hit the 2nd mirror, then traced a ray from the object to this spot on the 2nd mirror.  Note the path now for the 3rd image goes from the object to one mirror, reflects from this 1st mirror to the 2nd mirror, and reflects a 2nd time to your eye, and your brain takes this ray straight back to make the 3rd image.  Note also that angle i = angle r for both reflections.

You do NOT have to draw this diagram but do need to draw the 2nd mirrors position as you decrease the angle made with the 1st mirror in getting from 3 images, to 4 images, to 5 images, etc. to at least 8 images.  I do need you to fill in the table for part 2 that indicates the number of images and the angle between the mirrors.  Also need the diagram with the right angle and the three images marked.
Part 3 smart board notes period 1:  Note the previous diagram.   When you draw your face in the mirror you'll notice that the distance between your eyes on the drawing you traced on the mirror is half the true distance between your eyes.  The diagram shows a person (object) looking at the image of their feet in a mirror.  Note the two triangles formed that are similar and the Geometry behind why the ratio is 2:1 for each of the three sides of the similar triangles..

2.  Watch this video to answer the question on the homework sheet of

                Why the Sky is Blue and the Sunset Red??

3.  We found our dominate eye two ways:  1).  Made a triangle with our hands in front of our eyes by our nose, with both eyes open and with an object in the distance in the center of the triangle.  As you shut one eye and then the other, the eye that moves the object the least is your dominant eye.   2).  We held empty paper towel tubes up against each eye looking at objects on two different walls.  If you look harder at the object down one tube and cannot make out the object in the other tube but can kind of see it, then that's your dominant eye as if you stare down your non-dominate eye tube, you cannot make out anything in the other tube.