lecture_3 - Physics 140 Lecture 3 Greenhouse Gases Jan 25...

Info icon This preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
Physics 140 Lecture 3 Greenhouse Gases Jan. 25, 2012 1 Sunday, January 29, 12
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Announcements 2 1) For next lecture please read: Dire Predictions -- pp. 32-47 Beyond Smoke and Mirrors -- pp. 27-33 (chapter 4) 2) First homework assignment is due on Monday Sunday, January 29, 12
Image of page 2
Temperature 3 Temperature is a measure of the kinetic energy of the molecules. The hotter something is the faster its molecules are moving. Sunday, January 29, 12
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Temperature Scales 4 Sunday, January 29, 12
Image of page 4
Temperature Conversions 5 T C = 5 9 ( T F - 32) T F = 9 5 T C + 32 T K = T C + 273 Sunday, January 29, 12
Image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Thermal Energy Formula 6 Thermal Energy = number of molecules x 1.4 x 10 -23 [Joules / degree Kelvin] x temperature in degrees Kelvin U = N k B T U = n R T Thermal Energy = number of moles x 8.3 [Joules / degree Kelvin] x temperature in degrees Kelvin Sunday, January 29, 12
Image of page 6
Blackbody 7 A blackbody is an object that absorbs all of the radiation that is incident on it. The Sun is a blackbody! It absorbs any light that shines on it. A blackbody is only black when it is at absolute zero. At any non zero temperature it will emit electromagnetic radiation Sunday, January 29, 12
Image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Blackbody Radiation 8 The radiation emitted by a blackbody is very well understood.
Image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern