'Dt 2' diaporamas de présentation

Cosmology & the Big Bang

1.24k views • 108 slides

Introduction to IR spectroscopy

Introduction to IR spectroscopy. Yongsik Lee 2004. 6. IR spectrum. 16A theory of IR ABS. Energy of IR photon insufficient to cause electronic excitation But can cause vibrational or rotational excitation Fundamentals

789 views • 47 slides

Minimalism in Cryptography: The Even-Mansour Scheme Revisited

Minimalism in Cryptography: The Even-Mansour Scheme Revisited. Orr Dunkelman, Nathan Keller, and Adi Shamir Haifa University, Bar-Ilan University, and The Weizmann Institute April 17-th 2012. Minimal Constructions.

652 views • 46 slides

Minimalism in Cryptography: The Even-Mansour Scheme Revisited

Minimalism in Cryptography: The Even-Mansour Scheme Revisited. Orr Dunkelman, Nathan Keller, and Adi Shamir Haifa University, Bar-Ilan University, and The Weizmann Institute April 17-th 2012. Minimal Constructions.

709 views • 46 slides

ATLAS Results and Plans

575 views • 41 slides

STRATOSPHERIC OZONE DISTRIBUTION

STRATOSPHERIC OZONE DISTRIBUTION. Marion Marchand CNRS-UPMC-IPSL. SHAPE OF OZONE PROFILE. Altitude (km). UV. J O2 (s -1 ). Altitude (km). O 3 (molecules.cm -3 x 10 -12 ). Photolysis coefficient (s -1 ). O 2 (molecules.cm -3 x 10 -19 ).

626 views • 41 slides

Background knowledge expected

449 views • 32 slides

T he Cosmological Constant, Inflation, and Dark Energy * John D. Barrow

T he Cosmological Constant, Inflation, and Dark Energy * John D. Barrow. T = 2.7255 ?? 0.0006 K. Y(He-4)= 4 ? He/H = 0.2534 ? 0.0083 D/H = 2.87 ? 0.22 ? 10 -5. New Physics?. N eff = 3.046 is standard 3 light neutrino standard model.

427 views • 32 slides

Dark Energy in the Local Universe

Dark Energy in the Local Universe. Arthur D. Chernin Sternberg Astronomical Institute Moscow University

395 views • 29 slides

??????

??????. ?????????????????. ????????. ?????????????? ??? m:mass, c:dash pot, k:spring, t:time, x:axis ???????????????? ????????????????????????? T:temperature, t:time, x:axis. ?????????. d 2 x dx m + c + kx = 0 dt 2 dt. ?????????.

581 views • 29 slides

???????????? ? ??????? ? 6 ?????? (3) ???????

???????????? ? ??????? ? 6 ?????? (3) ???????. ????????????????? ????. ??????. ????????????????? ???????????????????? ??????????????? Drude ??? ???????????? (intraband transition) ??????????????? Lorentz ??? ???????????? (interband transition)

445 views • 26 slides

OSCILLATIONS

OSCILLATIONS. Chapter 15. Simple Harmonic Motion ( SHM ) Systems. Period (T) repeat time of the motion. frequency ( f ) r ate of the repetition Unit = Hz = 1 cycle/s = 1/s. f = 1/T. Amplitude (A) the maximum displacement from the midpoint. x = A cos ( ? t + ? ).

340 views • 23 slides

Lecture 19

Lecture 19. Goals:. Chapter 14 Periodic (oscillatory) motion. Assignment No HW this week. Wednesday: Read through Chapter 15.4. Periodic Motion is everywhere. Examples of periodic motion Earth around the sun Elastic ball bouncing up and down

355 views • 22 slides

PHSX213 class

PHSX213 class. Questions from last time ? Note: Labs today for some of you. The web-site has a link to the eGradePlus resources. You should register and check this out. Warm-ups may be posted there. HW2 should appear soon.

279 views • 19 slides

ILGA

327 views • 15 slides

Fading Gravity and Self-Inflation

Fading Gravity and Self-Inflation. Justin Khoury (Perimeter Institute). hep-th/0610???. Motivation: Widely studied modifications of gravity, e.g. large extra dimensions, typically lead to stronger gravity at short distances. 2 ways to see this:. 1. Deviation from inverse-square law:.

234 views • 13 slides

Equation of Motion for a Particle Sect. 2.4

Equation of Motion for a Particle Sect. 2.4. 2 nd Law (time independent mass): F = (dp/dt) = [d(mv)/dt] = m(dv/dt) = ma = m(d 2 r/dt 2 ) = m r (1) A 2 nd order differential equation for r(t) . Can be integrated if F is known & if we have the initial conditions.

222 views • 12 slides

????

????. ?????????????????. ???????????????????? ln ([N 2 O 5 ] 0 / [N 2 O 5 ]) vs. t ????????????????????????? ??????????? t [s] 0 200 400 600 1000

221 views • 7 slides

The 600A corrector can be split into 3 categories with different functionalities.

The 600A corrector can be split into 3 categories with different functionalities. Each 600 A LHC corrector circuit fall into one, two or the three categories. Squeeze for the mains in IR1 & IR5. Quadrupole gradient [T/m] from Q1 to Q6 as a function of b * :

148 views • 4 slides

????

139 views • 2 slides