6.2 Extending Human Vision

Slides:

Advertisements

Similar presentations

Telescopes By Mr. King. Tube Stand Tube Stand eyepiece.

Advertisements

Grade 8 Science Unit 2: Optics

 If an object is beyond 2F, the image from a converging lens will be inverted, real, and smaller, and will always lie somewhere between F and 2F on the.

Grade 8 Science Unit 2: Optics Chapter 6: Lenses refract light to form images.

Topic 5 – Extending Human Vision Tools have been developed, to extend our vision, enabling us to see tiny micro-organisms, far-off distances and the vast.

(c) McGraw Hill Ryerson Extending Human Vision Microscopes A compound light microscope uses two convex lenses to magnify small, close objects.

Now You See It Marion White and Alex Treser Period 8/9 AP Physics 1.

Mirrors and Lenses Chapter 14.

(c) McGraw Hill Ryerson Extending Human Vision Microscopes A compound light microscope uses two convex lenses to magnify small, close objects.

True or False: 1. Mirrors are used in some telescopes. 2. Telescopes are often located in humid environments because water vapor in the air enhances visibility.

Extending Human Vision. Microscopes (c) McGraw Hill Ryerson 2007  A compound light microscope uses two convex lenses to magnify small, close objects.

Notes 2-5 OPTICAL TOOLS. Cameras: How do they work? Light from object travels through one or more convex lenses Lens focuses light Puts an image on film.

Light Using Light.

Mirrors and Lenses. Mirrors and Images Key Question: How does a lens or mirror form an image?

Refraction & Lenses Sections 11.7 and 11.8.

6.2 Extending Human Vision.  Distance between the lens and the screen must be correct to have a clear image = focussing   Compound light microscope.

Mirrors. Types of mirror There are two types of mirror Plane (flat) Curved Concave (curves in) Convex (curves out)

 Imagine a clear evening when a full moon is just starting to rise. Even though the Moon might seem large and close, it is still too far away for you.

Mirrors. What is a plane mirror? ● Its a plain mirror! (But called a plane mirror...) ● Its a FLAT and SMOOTH mirror, like many in your home. ● The reflection.

The Simple Astronomical Telescope. The angular magnification, M, (also sometimes called magnifying power) produced by an optical instrument is defined.

6.2 Extending Human Vision

Lesson P4 Part 1 ~ Mirrors & Reflection

Chapter 34 Geometric Optics © 2016 Pearson Education Inc.

6.2 Extending Human Vision

DO NOW Sit where your seat normally would be in the room

Chapter 11 Review.

While you are watching the video think about why this is happening.

Sight, COLOR, LENSES, and MIRRORS

Bell Work # Tuesday, How do you see objects? Light enters the eye

6.2 Extending Human Vision

Refraction & Lenses Sections 11.7 and 11.8.

Extending Human Vision

LENSES By Jamie Ortiz.

Notes 23.3: Lenses and Images

Geometric Optics.

Chapter Menu Lesson 1: What is light? Lesson 2: Light and Matter

Thin Lenses-Intro Notes

Unit 8: Light and Optics Chapter 22: Optics

Chapter 15: Refraction.

17.2 Mirrors, Lenses, and Images

Warm Up A concave mirror has a focal length of 5 cm. If an object is 2 cm away from the mirror, where is the image? A convex mirror has a focal length.

Introduction to Lenses

Lesson P4 Part 2 ~ Lenses & Refraction

17.2 Mirrors, Lenses, and Images

5.3 Using Lenses to Form Images

5.3 Using Lenses to Form Images

Lenses Lesson 10.

Lesson P4 Part 1 ~ Mirrors & Reflection

Chapter 16.4: Refraction, Lenses, and Prisms

The Simple Astronomical Telescope

19.1 Mirrors Ray digram Angle of incidence= angle of reflection

5.3 Using Lenses to Form Images

Unit 3 Practice Test Answer KEY

6.2 Extending Human Vision

Unit 3 Space Exploration

5.3: Using Lenses to Form Images

Reflection and Refraction

Unit 3: Chapter 6 Refraction.

Using Lenses to Form Images

Lesson P4 Part 2 ~ Lenses & Refraction

5.3: Using Lenses to Form Images

EXTENDING HUMAN VISION

(c) McGraw Hill Ryerson 2007

Mirrors and Lenses.

5.3 Using Lenses to Form Images

Telescopes Augmenting the Eye.

The Simple Astronomical Telescope

Presentation transcript:

6.2 Extending Human Vision Chapter 6 6.2 Extending Human Vision

Helping Us See How do we see the tiniest micro-organisms that live around us? We use microscopes How do we see the stars and objects in space that are in the far-off distance? We use telescopes

Microscopes Microscopes magnify objects (causes them to appear larger) A microscope uses an objective lens (a convex lens) which allows for a magnified image. The eyepiece is another convex lens that magnifies the image again.

Why don’t we see far away objects clearly? As objects move away, less reflected light enters our eye. The object appears dimmer as it moves away. A telescope allows us to see distant objects clearly by gathering light. The image produced by a telescope is much brighter and can be magnified!

Refracting Telescopes A telescope also has an objective lens and an eyepiece lens Objective lens: bends the light into focus and forms an image. Eyepiece lens: magnifies the image and focuses the image.

Reflecting Telescopes These telescopes use mirrors to direct and gather light A concave mirror at the base of the telescope reflects and converges light Light travels to a plane mirror, where it is reflected toward an eyepiece A convex lens is used in the eyepiece: light rays converge together at a focal point to form an image

Reflected Light Concave Mirror Plane Mirror Convex Lens