PROMISE FINDING YOUR BLIND SPOT - Sanford Health
PROMISE FINDING YOUR BLIND SPOT
EXPERIMENT TIME! TOTALLY AWESOME x SCIENCE Gather the materials: 3x5 Card Yard Stick Marker Mark the card with a dot and an x.
EXPERIMENT TIME! TOTALLY AWESOME SCIENCE Close one eye and stare at the x on the card. Hold the card at arm’s length and slowly bring the card closer to your face until the dot disappears.
PROMISE PROMISE Name: FINDING YOUR BLIND SPOT Answer the questions below as you progress through the What is a Blind Spot and How to Find It lesson and Finding Your Blindspot slideshow. 1. Why does the dot disappear? TOTALLY AWESOME SCIENCE TOTALLY AWESOME SCIENCE 2. Why does the dot reappear? 3. What could you do to test your hypothesis? ANSWER THE FIRST THREE QUESTIONS IN YOUR LAB NOTEBOOK!
EXPERIMENT TIME! TOTALLY AWESOME SCIENCE You’ve found your blind spot! The blind spot is where the optic nerve comes from the brain into the eye. In this spot, your eye’s retina has no light receptors. When you hold the card so the light from the dot falls on this spot, you cannot see the dot!
ANATOMY OF YOUR EYE TOTALLY AWESOME SCIENCE The optic nerve is a nerve at the back of your eye that connects your retina to your brain. It is made of a bundle of nerve fibers that carry messages from your eye to your brain. The fovea is an area of the retina that is densely packed with light receptors, giving you the sharpest vision. Fovea Optic Nerve
EXPERIMENT TIME! TOTALLY AWESOME x SCIENCE Now let’s measure your blind spot! Draw a line through the card as shown.
MEASURE YOUR BLIND SPOT BY YOURSELF 1. Hold the card at 25 cm from your face. 2. Close your left eye. 3. Look at the cross with your right eye. 4. Move a pen across the card until the point disappears and mark the card at that spot. 5. Repeat this process several times from slightly different angles and from the opposite side of the blind spot. When you have several marks, connect the marks to form a circle. 6. Then, draw a line through the center of the circle and measure it as the diameter. TOTALLY AWESOME SCIENCE TOTALLY AWESOME SCIENCE MEASURE YOUR BLIND SPOT WITH A PARTNER 1. Hold the card at arm’s length. 2. Have your partner measure the distance from the card to your eye. 3. Slowly move the card horizontally left and right. 4. Note where the dot disappears and reappears. 5. Have your partner measure the distance between where the where it disappears and reappears. Based on whether or not you have a partner, follow the steps in your lab notebook and record the data.
Field of Vision TOTALLY AWESOME x SCIENCE Blind Spot Diameter of Blind Spot
DO THE MATH: s/2 d/D TOTALLY AWESOME SCIENCE D d s 2 cm Diameter of the blind spot on the note card d Distance from the face D Depth of your eye is about 2 cm Size of your blind spot s
ANSWER THE REMAINING QUESTIONS IN YOUR LAB NOTEBOOK! 6. How does this relate to a blind spot when driving? TOTALLY AWESOME SCIENCE 7. How might your blind spot affect you in your life? TOTALLY AWESOME SCIENCE 8. Is your neighbor’s blind spot the same size as yours? 9. What more would you like to know about your eye and how can you find the answers? Here’s what I did today! Today I visited the virtual PROMISE Lab at Sanford Research. I learned the optic nerve that passes through the retina in my eye creates a blind spot. I conducted an experiment to measure the size of my own blind spot.
blind spot. When you have several marks, connect the marks to form a circle. 6. Then, draw a line through the center of the circle and measure it as the diameter. MEASURE YOUR BLIND SPOT BY YOURSELF MEASURE YOUR BLIND SPOT WITH A PARTNER 1. Hold the card at arm's length. 2. Have your partner measure the distance from the card to your eye. 3.
the blind spot and, for this reason, the blind spot does not refer to some particular fact that cannot be put into words or some speciic situation that cannot be understood. The blind spot is implicit in every situation. Think about young children before they have learned to talk. I have a granddaughter, Aviva, who has just turned one.
The Blind Spot 1. Edition: 10 Language: English Character set encoding: ASCII *** START OF THE PROJECT GUTENBERG EBOOK, THE BLIND SPOT *** This eBook was produced by Charles Franks and the Online Distributed Proofreading Team. THE BLIND SPOT AUSTIN HALL AND HOMER EON FLINT
CONSCIOUSNESS AND COGNITION 2, 155-164 (1993) Why the Blind Can't Lead the Blind: Dennett on the Blind Spot, Blindsight, and Sensory Qualia RoBERT N. McCAULEY Department of Philosophy, Emory University, Atlanta, Georgia 30322 In Consciousness Explained Dan Dennett
Accident statistics have highlighted blind spot accidents A virtual analysis of three Category N 3 vehicles has highlighted that blind spots exist with mirrors that are adjusted to comply to 2003/97/EC A proposed revision to Regulation No. 46 has been made to solve this blind spot A mirror based solution has been tested using virtual and real
Three Blind Mice Three Blind Mice Three Blind Mice See how they run See how they run They all ran after the farmer's wife She cut off their tails with a carving knife Did you ever see such a sight in your life As Three Blind Mice It was very cold.
Capacitors 5 – 6 Fault Finding & Testing Diodes,Varistors, EMC capacitors & Recifiers 7 – 10 Fault Finding & Testing Rotors 11 – 12 Fault Finding & Testing Stators 13 – 14 Fault Finding & Testing DC Welders 15 – 20 Fault Finding & Testing 3 Phase Alternators 21 – 26 Fault Finding & Testing
Jesus can do anything. Jesus Heals a Blind Man Lesson 8. Bible Verse “I can do everything through Christ, who gives me strength” (Philippians 4:13). Growing Closer to Jesus. Children will n. discover how blind people rely on their other senses, n hear how Jesus healed a blind man, n. experience what it might be like to be blind, andFile Size: 521KB
Longair: “High Energy Astrophysics” Rohlfs and Wilson: “Tools of Radio Astronomy” Dyson and Williams: “The Physics of the Interstellar Medium” Shu: “The Physics of Astrophysics I: Radiation” Radiation Processes We can measure the following quantities: The energy in the radiation as a function of a) position on the sky b) frequency The radiation’s .
