Upload File

light, mirrors and telescopes rajesh gupta university of california, san diego. mr. smith’s class

  • Home
  • Documents
  • Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class
53
Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

Upload: brianna-bell

Post on 04-Jan-2016

217 views

Category:

Documents


1 download

Report

Tags:

TRANSCRIPT

Page 1: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

Light, Mirrors and Telescopes

Rajesh GuptaUniversity of California, San Diego.

Mr. Smith’s Class

Page 2: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

2

We see things because they reflect light into our eyes:

Homework

Page 3: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

3

We hear things when they We hear things when they vibratevibrate

If something vibrates with a very quickly we say it has a _____ pitch.

If something vibrates with a vibrates slowly we say it has a ____ pitch.

Words – low, high

Page 4: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

4

How do we see things?

Page 5: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

5

Indoors and outdoors

Page 6: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

6

We make or see or hear waves

Page 7: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

7

Drawing sounds…Drawing sounds…

This sound wave has a _____ frequency:

This sound wave has a ___ _frequency:

Page 8: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

8

Waves can be small or large

Page 9: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

9

Light travels VERY FAST – around 300,000 kilometres per second.

At this speed it can go around the world 8 times in one second.

Waves can be slow or fast

Page 10: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

10

Small wave to see small things

But we can use big waves to see large things

Page 11: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

11

The Universe is a VERY Big Place

1,000,000,000,000 galaxies 100,000,000,000 - 1,000,000,000,000

stars in a galaxy

About 100,000,000,000,000,000,000,000 kilometers Light takes 13 billion years to travel

Page 12: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

12

We can use different waves to see the universe

Page 13: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

13

We can use different waves to see the universe

Page 14: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

14

We can use different waves to see the universe

Page 15: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

15

We can use different waves to see the universe

Page 16: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

16

We can use different waves to see the universe

Page 17: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

17

Page 18: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

18

We can use lightWe can use light

Light travels in straight lines:

Laser

Page 19: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

19

Light reflects Light reflects

Incident ray Reflected ray

Mirror

Page 20: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

20

Using mirrorsUsing mirrorsTwo examples:

1) A periscope

2) A car headlight

Page 21: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

21

Clear vs. Diffuse ReflectionClear vs. Diffuse Reflection

Smooth, shiny surfaces have a clear reflection:

Rough, dull surfaces have a diffuse reflection.

Diffuse reflection is when light is scattered in different directions

Page 22: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

22

Mirrors can be concave or convex

Page 23: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

23

Convex Mirrors

Page 24: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

24

Concave Mirrors

Where have you seen it?

Page 25: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

25

Concave Mirrors and Far Objects

Page 26: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

26

Refraction is bending of Refraction is bending of lightlight

Page 27: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

27

Page 28: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

28

Lenses use refraction to form images

Page 29: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

29

Telescopes and Microscopes

Page 30: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

30

Telescopes Optical Telescopes use light to see

things Reflecting telescopes use mirrors Refraction telescopes use lenses

Bigger telescopes collect more light See more things, see farther If you double the area of the mirror,

you collect four times as much light

Radio Telescopes use radio waves to see things

Can observe at night, through clouds, rains

Larger waves, so telescopes can be bigger

Page 31: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

31

Refractors (lens based) are hard to make very large

Yerkes Observatory

40 Inch refractor (1897)

Page 32: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

32

Reflecting Telescopes

Page 33: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

• 100 in. (2.5 m) Hooker, Mount Wilson. Largest 1917-1948. (photo: Mount Wilson)

• 200 in. (5 m) Hale, Mount Palomar. Largest 1948-1974. (photo: Alain Maury)

• BTA-6 (6 m), Mount Pashtoukov. Largest 1974-1993. (photo: SAO-RAS)

• Keck I & II (9.8 m), Mauna Kea. Largest 1993-(photo: WM Keck Observatory)

Observatories

Page 34: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

34

Observatories

Most are made in high locations and dry areas Kitt Peak (Arizona),

Mauna Kea (Hawaii), Andes Mnts (Chile)

Page 35: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

35

Kitt Peak Observatories

24 Telescopes

Page 36: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

36

CTIO (Chile) above

Siding Springs (Australia) right

Page 37: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

37

Mauna Kea Observatories - 12 telescopes of various sizes

Page 38: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

38

The Keck Telescopes

Each is 10 meters across

Page 39: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

39

Subaru Telescope - 8.3 meters

Page 40: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

40

The Very Large Telescope

(VLT)

4 telescopes each with 8 m mirrors - acts like a 16 m telescope

Page 41: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

41

The Overwhelmingly Large Telescope - OWL100 meters across

Is there no limit?!?!?!?!?

Page 42: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

42

Using Other Waves

Page 43: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

43

Radio Telescopes - Use same design as visible light telescope - a parabolic surface

Page 44: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

44

Arecibo Radio Telescope

Largest Single Dish

305 m across

Page 45: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

45

Radio Telescope: Arcibo, Puerto Rico

Page 46: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

46

The Very Large Array

27 Radio telescopes acting as one

Radio Image of a Supernova remnant

Page 47: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

47

Radio Telescopes: Green Bank, West Virginia

Page 48: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

48

Ooty Radio Telescope

Page 49: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

49

GMRT: Giant Metrewave

Page 50: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

50

Space Telescopes

InfraredSpitzer Space Telescope

Visible - UltravioletHubble Space Telescope

X-RayChandra Telescope

Page 51: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

51

Hubble Space Telescope

Page 52: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

52

Page 53: Light, Mirrors and Telescopes Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

53

Acknowledgements Material collected from diverse and many sources, including

http://observe.phy.sfasu.edu/courses/phy410/lectures410/Movies/sound/ http://science.howstuffworks.com/light14.htm http://www.kidskonnect.com/LightSound/LightSoundHome.html The Soundry: How We Perceive Sound: The Ear The Science Spot: Physics - Light & Sound What are waves?, NASA Physics Zone: Lessons on Waves, Light, and Sound http://www2.biglobe.ne.jp/~norimari/science/JavaEd/e-wave6.html Waves, Light and Sound Review

http://www.glenbrook.k12.il.us/gbssci/phys/reviews/63reviews/u11and12/u1112rev.html http://online.physics.uiuc.edu/courses/phys150/fall03/slides/lect11.pdf P100_Class10_ICQ.pdf (application/pdf Object) http://www.astro.ubc.ca/people/newbury/astro311/notes/060925h.pdf Waves&Superposition.pdf (application/pdf Object) http://www.ifa.hawaii.edu/~stalder/astro110/lectures/lecture9.pdf http://www.colloid.nl/Education/Nat1chem/waves-lectures-Nat-Chem-2006.pdf The educational encyclopedia, physics, optics and color The Physics Classroom http://faculty.salisbury.edu/~jwhoward/astro108/html/present.htm Giant Meterwave Radio Telescope; Ooty Radio Telescope http://www.ece.vt.edu/swe/RFI2004/35.pdf


“Optical Telescopes.”

Smith’s Sports

DR. RAJESH M. KAMBLEDR. RAJESH M. KAMBLE

Radiation & Telescopes

Telescopes How do they work?. 1. History 2. Lenses & Hardware 3. Reflecting Telescopes 4. Refracting Telescopes

Welcome to Mrs. Smith’s Class

Tools for Space Exploration Optical TelescopesOptical Telescopes Radio TelescopesRadio Telescopes Space TelescopesSpace Telescopes SatellitesSatellites

Telescopes SerenaChao

Matter Rajesh Gupta University of California, San Diego. Mr. Smith’s Class

Infrared Telescopes

DICK SMITH’S POPULATION PUZZLE · 2010. 8. 12. · Dick Smith’s Population Puzzle tells the story of Dick Smith’s campaign to change national attitudes on population growth

SMITH’S MARINE RAILWAY - Alaina Nunn Senior …alainanunn.weebly.com/uploads/1/7/0/2/17021500/...Smith’s Marine Railway, Inc. Summer 2011 3 One thing is for certain: The Smith’s

COACH SMITH’S CLASS

by Smith’s Environmental ProductsBY SMITH’S ENVIRONMENTAL PRODUCTS RECESSED WALL KITS BY SMITH’S ENVIRONMENTAL PRODUCTS Model: KSWK Model: KSWK2010 ~ All capacities are rated

Optical Telescopes. Types of Optical Telescopes Refractor Telescopes

Telescopes 87

Radio Telescopes

Big Telescopes

Modern Telescopes

Space telescopes

Reed Smith’s Nanotechnology Teleseminar Transcription · Reed Smith’s Nanotechnology Teleseminar Transcription Jennifer (Operator): Hello and welcome to Reed Smith’s Nanotechnology

Telescopes & Astronomy

G5_LSR_3B_5.16 Telescopes

Radio Telescopes - docs.hisparc.nl · We need special telescopes, radio telescopes to ‘see’ them. With these telescopes we can also see the cosmic background radiation (CBR) left

Mrs. Smith’s Class

Mrs. Smith’s Class 2013

Welcome to Mrs. Smith’s Classroom

Robotic telescopes

Olivia smith’s art slide show

Series Telescopes

TELESKOPE TELESCOPES

DAVE SMITH’S EXTERMINATING, INC

Rajesh Murthy Broucherrajeshmurthy.com/images/Rajesh Murthye_brochure.pdfTitle Rajesh Murthy Broucher Author Kiran Created Date 20130806131814Z

Chapter 6: Telescopes Portals of Discovery€¦ · • Telescopes for invisible light are usually modified versions of reflecting telescopes. • Many of the telescopes used for observing

Adam Smith’s Specialization Theory