Upload File

welcome back to 8.033! · image courtesy of wikipedia. image courtesy of wikipedia. 122 nm 103 nm...

  • Home
  • Documents
  • Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen
52
Richard Feynman, 1918-1988 Welcome back to 8.033!

Upload: others

Post on 21-Aug-2020

7 views

Category:

Documents


0 download

Report

TRANSCRIPT

Page 1: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

Richard Feynman, 1918-1988

Welcome back

to 8.033!

Page 2: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

Summary of last lecture:

• Atomic physics

• Nuclear physics

Image courtesy of Wikipedia.

Image courtesy of Wikipedia.

122 n

m 103 n

m 97.3

nm95.0 nm 93.8 nm

656 nm486 nm

434 nm410 nm

1875 nm

1282 nm

1094 nm Paschen series (infrared)

n = 5

n = 4

n = 3

n = 2

n = 1

n = 6

Lyman series (ultraviolet)

Balmer series (visible)

Figure by MIT OCW.

Page 3: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

E big -> λ small

Image courtesy of Wikipedia.

Page 4: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

MIT Course 8.033, Fall 2006, Lecture 13Max Tegmark

Today’s topics:• Particle physics

• The greatest unsolved problems in physics

Page 5: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

Particlephysics

Page 6: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

CERN particle accelerator

Image courtesy of Wikipedia.

Page 7: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

Lin

ear

part

icle

acc

eler

ator

(F

erm

ilab)

Image courtesy of Wikipedia.

Page 8: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

How derive curvature radius of particle tracks?

Page 9: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

Figure by MIT OCW.

Page 10: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

Courtesy of CPEP. Used with permission.

Page 11: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

WHY?

Page 12: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

The Standard Model Lagrangian

(From T.D. Gutierrez)

L=

Page 13: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

Cmbgg OmOlSt

anda

rd m

odel

par

amet

ers:

Cos

mol

ogy

Parti

cle

phys

ics

Required

Optional

C = h = G

= kb = q

e = 1−

Page 14: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

Cmbgg OmOl How measure?

Stan

dard

mod

el p

aram

eter

s:C

osm

olog

yPa

rticl

e ph

ysic

s

Required

Optional

Why these values?

Page 15: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

Cmbgg OmOl

Page 16: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

Cmbgg OmOl

Page 17: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen
Page 18: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen
Page 19: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen
Page 20: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

More energy

Less energy

Page 21: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen
Page 22: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

α β γ

Page 23: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen
Page 24: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen
Page 25: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

Over 22.6 meters, the gravitational redshift is only 5x10-15, but the Mössbauer effectwith the 14.4 keVgγ−ray from iron-57has a high enough resolution to detect that difference.

Harvard Tower Experiment(Pound & Rebka 1960)

Gamma photons launched upward

Gamma photons dropped

57Fe Source

57Fe Source

57Fe Detector

57Fe Detector

22.6 m 22.6 m

Figure by MIT OCW.

Page 26: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

Image courtesy of NASA and the ESA.

Page 27: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen
Page 28: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

More energy

Less energy

Page 29: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

UNSOLVED

PROBLEMS

Page 30: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

• Where do the “constants” come from? Why 3+1 dimensions?

• Is there a quantum gravity TOE? (M-theory? Black hole evaporation?)

• Proton decay?

• SUSY?

• Higgs?

• Neutrino properties?

• Dark energy?

• Dark matter?

• Inflation?

UNSOLVED PROBLEMS:

Page 31: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

PREDICTINGPARAMETERS

Page 32: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

It's tough to make predictions, especially about the future.

Yogi Berra

Page 33: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

Mass of Earth 5.9742×1024 kg

Semimajor axis of Earth’s orbit

149,597,870,691 m

Mass of electron 9.10938188×10-31

kgBohr Radius of Hydrogen atom

5.29177x10-11 m

Parameter status?

Page 34: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

Mass of Earth 5.9742×1024 kg

Semimajor axis of Earth’s orbit

149,597,870,691 m

Mass of electron 9.10938188×10-31

kgBohr Radius of Hydrogen atom

5.29177x10-11 m

Parameter status?

EnvironmentalEnvironmental

Fundamental?

Fundamental?

Page 35: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

Kepler, Newton

Classical Physics

Landscape + Inflation

Level IV Multiverse?

Effective Laws ("Bylaws", "Initial conditions")

Planets are sphericalOrbits are circular

Initial matter distribution (Aµ, Jµ, ψ, ....)

SU(3)xSU(2)xU(1) symmetryDimensionality of spaceConstants (α, ρ , ...)V

TOE equations

FUNDAMENTAL LAWS

Figure by MIT OCW.

Page 36: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

What are the 4 multiverse levels like?

1) Same effective laws of physics, different initial conditions

2) Same fundamental laws of physics, different effective laws

3) Nothing qualitatively new

4) Different fundamental laws of physics

Page 37: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

Three little numbers:

Page 38: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

R~ 1/mpαβ

M~ mp

Weisskopf 1975Carr & Rees 1979

Atom

Page 39: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

AsteroidR~ 1/α1/2β1/2mp

2

M~ α3/2β3/2 /mp2

Page 40: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

The Earth

R~1/mp2α1/2β

M~ α3/2 /mp2

Weisskopf 1975Carr & Rees 1979

Page 41: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

R~ 1/mp3/2α3/4β

M~ α3/4 /mp1/2

Carr & Rees 1979

Mt. Fuji

Page 42: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

M~ 1/mp2

Weisskopf 1975Carr & Rees 1979

Image courtesy of NASA.

Page 43: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

R~ α3β /mp3β3/2

M~ α5 /mp3β1/2

Carr & Rees 1979

Image courtesy of Wikipedia.

Page 44: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

R~ 1/mp5

M~ 1/mp5

Carr & Rees 1979

The known universe

Page 45: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

Cmbgg OmOl

Bas

ed o

n C

arr &

Ree

s 197

9,B

arro

w &

Tip

ler1

986

Inside

black

hole

Below quantum

limit

Page 46: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

Cmbgg OmOl

Bas

ed o

n C

arr &

Ree

s 197

9,B

arro

w &

Tip

ler1

986

Inside

black

hole

Below quantum

limit

Fine-tuning? NO!

Page 47: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

Figure 4 from Tegmark, “Is `the theory of everything' merely the ultimate ensemble theory?”http://arXiv.org/abs/gr-qc/9704009

Page 48: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

Most spectacular fine tunings known:

•Dark energy density

•Higgs VEV

Page 49: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

Cmbgg OmOl

Agr

awal

, Bar

r, D

onog

hue

& S

ecke

l199

8, P

RL, 8

0, 1

822

• v/v0<0.5: protons (uud) decay into neutrons (udd)•v/v0<0.8: diproton & dineutron• v/v0=1: we are here• v/v0>2: deuterium unstable• v/v0>5: neutrons (udd) unstable even in nuclei• v/v0>103: protons (uud) decay to Δ++ (uuu)

Effect of Higgs VEV v=246 GeV:

Courtesy of Physics Review Letters. Used with permission.

Page 50: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

α+ α →8Be8Be+ α →12C12C+ α →16O

Figure 1 from Oberhummer, Csoto & Schlattl, “Stellar production rates of carbon and its abundance in the universe.” http://arXiv.org/abs/astro-ph/0007178

Page 51: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

4 effective spatial dimensions: no stable orbits, no stable atoms(Ehrenfest 1917; Tangherlini 1963)

Figure 6 from Tegmark, “Is `the theory of everything' merely the ultimate ensemble theory?”http://arXiv.org/abs/gr-qc/9702052

Page 52: Welcome back to 8.033! · Image courtesy of Wikipedia. Image courtesy of Wikipedia. 122 nm 103 nm 97.3 nm 95.0 nm 93. 8 nm 656 nm 486 nm 434 nm 410 nm 1875 n m 1 2 82 nm 1094 nm Paschen

Figure 7 from Tegmark, “Is `the theory of everything' merely the ultimate ensemble theory?”http://arXiv.org/abs/gr-qc/9702052


l o u g h Legend - Lands of America · 2020. 7. 10. · "nm nmnm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm Þ B u l l T o n g u e C r e e k West E n d S l o u g h B

Cloud Computing - Northern Kentucky University · Disadvantages of Cloud Computing 7. Cloud Deployment Architectures Images courtesy of Majd F. Sakr or from Wikipedia unless otherwise

MODERN rA11 NM =MR I= VIII MR r Ihr &MIJS1C...Dire Straits photos: Courtesy of Warner Brothers Records. Frank Zappa photos: Courtesy of Wartoke Concern. Jean -Luc Ponty photo: Courtesy

11°30'0W 11°0'0W K en m aD is tr c M p 3 5 . 7 kk Th is m ... · nm nm nm nm nm nm nm nm nm nm nm nm nm nm nmnm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm

Gate - images.landsofamerica.com"nm nmnm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm Þ B u l l T o n g u e C r e k West E n d S l o u g h B a ti s e C r e ek T-3 94 Ac

Introduction to Wikipedia & Wikipedia assignment

MINING IN THE MAGDALENA AREA, SOCORRO COUNTY ......Kelly mine, 1987. Courtesy of Wendell E. Wilson, Historical Archives, NM Bureau of Geology, Socorro NM From 1866 to 1970, 7 mining

Microfluidic Systems - University of Minnesota 18 Microfluidic... · Courtesy Ed Overton, LSU. ... polarity) - Substrate Material: PMMA - Channel dimensions: 20 nm (width) ... –

Aamal e Qurani€¦ · Courtesy . Courtesy . Courtesy

Wikipedia on Twitter: Analyzing Tweets about Wikipedia

geospasial.bnpb.go.idgeospasial.bnpb.go.id/.../PETA-SEBARAN-PENDIDIKAN-DI-SEKITAR-GUNUNG... · nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm

Ward / Quartier 1...$K $K $K $ $K!C nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm …

Courtesy  · 2018. 8. 10. · Courtesy . Courtesy . Courtesy

Photo by Ahilan Parameswaran 2008, courtesy of Wikipedia ...relativecosmos.com/journal/Australian-Telescopes-A-Retrospective-formatted.pdfTelescope). Other extremely large telescopes

Tallinn, Estonia European School of Information Theory April 14-18 th, 2014 The images are courtesy of Wikipedia/Wikimedia Commons

Photo by Ahilan Parameswaran 2008, courtesy of Wikipedia

ZENAB FOR WOMEN IN DEVELOPMENT · Fatima Ahmed. All photo credits courtesy of Zenab for Women in Development. Maps courtesy of CIA World Factbook and Wikipedia. Suggested Citation

UNDERSTANDING, CHOOSING, AND PROTECTING POLLINATORScpsc270.cropsci.illinois.edu/syllabus/pdfs/Lecture09... · 2016-09-06 · Definitions, courtesy of Wikipedia (with a few edits)

Louis Fernandes 22.012 May 11, 2006 - MIT OpenCourseWare€¦ · Stellarators Louis Fernandes 22.012 May 11, 2006 Background image courtesy of Wikipedia

Doing wikipedia when you're not editing wikipedia

Internet Archive Nahi.pdf · Courtesy . Courtesy . Courtesy

J AME STR HPUB LI C O JK to Grade 8 175 B real y D iv , P ...kprcontentlibrary.kprdsb.ca:8080/docushare/dsweb... · nm nm nm nm nm nm nm nm nm nm nm nm nm n nm nm nm nm nm nm nm nmKenner

Intelligent design - Wikipedia, the free encyclopedia - … design - Wikipedia, the free... · Intelligent design - Wikipedia, the free encyclopedia Intelligent design From Wikipedia,

MAPA DE VALORES DE TERRENOS Y … san jose goicoechea... · nm æ æ nm nm æ nm nm nm æ nm æ nm nm nm æ nm nm nm nm æ nm æ nm nm nm æ nm nm æ æ æ æ æ nm nm æ æ æ nm

Courtesy : RRB... Courtesy : RRB. Courtesy : RRB.

1 The Difference Engine, Charles Babbage Images from Wikipedia (Joe D and Andrew Dunn) Slides courtesy Anselmo Lastra

SYRIA REFUGEE RESPONSE - reliefweb.intreliefweb.int/sites/reliefweb.int/files/resources/WASH_Presence... · nm nm nmn nm n nm nm nm nmnm n nm nm nm nm nm nm nmn nm nm nmnmn nnm nm

Content About Wikipedia About Wikipedia How to assess Wikipedia??? How to assess Wikipedia??? GOOGLE SEARCH – WIKIPEDIA GOOGLE SEARCH – WIKIPEDIA

Oregon Institute of Technology L ß ns 97 Hi UPPER · ns nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm!r!O B-27 B-26 B-25 B-24 B-23 B-18 B-17 B-16 B-15 B-14

USD 259 District Map...nn n n n n n n n n n n n n n n n n n n nm nmnm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nmn nm nmnm nm nm nmnnm

3403000 3403500 3404000 3404500 3405000 3405500 0 5 · 2017. 10. 17. · nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nmnm nm nm nmnm nmnm nm nm nm nm nm nm nmnm

Wikipedia – free encyclopedia › wikipedia › commons › 9 › 90 › ...13 / 20 Quality surveys •c’T(2004): Wikipedia gegen Brockhaus und Encarta –Wikipedia 3.8 pts, both

Lawr enc , KSnm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm nm Õ" ñ k k k k ñ k s s s s s J^ L a k e View L ake Lake Alvamar K a n s a s r R i v e r Mary's Lake

Impact of Advanced Electronics for DoD Today · 7/19/2017  · 65 nm CMOS. 14 nm CMOS pixel with computation ~10 µm ~6 µm. Images courtesy: MIT Lincoln Laboratory. ... real time

MAPA DE VALORES DE TERRENOS POR ZONAS … del Canton Alajuela 0… · nm nm æ nm nm æ nm nm nm nm æ æ nm nm nm nm nm æ nm nm nm nm æ nm nm nm nm æ æ æ æ nm nm æ nm nm nm