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Thin Lens Equation Converging and Dverging Lens Ray Diagram & Sign Conventions
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- Опубліковано 6 сер 2016
- This physics tutorial shows you how to use the thin lens equation / formula to calculate variables such as the image height and image distance in addition to the lateral magnification as well. This video contains plenty of examples and practice problems for you to work on.
Law of Reflection - Geometric Optics:
• Law of Reflection - Ge...
The Mirror Equation:
• Spherical Mirrors & Th...
Refraction of Light:
• Refraction of Light
Snell's Law & Index of Refraction:
• Snell's Law & Index of...
Total Internal Reflection & Critical Angle:
• Total Internal Reflect...
Thin Lens Equation:
• Thin Lens Equation, Op...
_____________________________
Ray Diagrams:
• Ray Diagrams
The Huygens Principle:
• Huygens Principle - Ph...
Young's Double Slit Experiment:
• Young's Double Slit Ex...
Single Slit Diffraction:
• Single Slit Diffractio...
Diffraction Grating Problems:
• Diffraction Grating Pr...
Polarization of Light Problems:
• Polarization of light ...
_________________________________
Final Exams and Video Playlists:
www.video-tuto...
Full-Length Videos and Worksheets:
/ collections
Final Exams and Video Playlists: www.video-tutor.net/
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Just a little. correction here: If the object is further than 2f from the lens, it's said to be diminished; and if it's between 2f and f, it is enlarged.
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I'm confused because my book says focal length in negative when the mirror is convex and positive when concave..
Make sure your not getting mirrors and lenses mixed up. This video is for lenses, he made another video for mirrors.
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Hi !
I not understand how you did this 6:14 until 7:26 m
I thought in my mind ''what if we put the image at the f'' while he was learning. And the next thing he said was, '' if we put the object at the f....". STUDENTS NEED THIS TYPE OF CONNECTION MORE THAN WIFI.
Warning!
F = R/2 is for mirrors (mirrors use reflection, lenses use refraction, refraction uses Snell's law which is a function of refractive index)
For lenses, the lens-makers equation can be used to determine the focal length but you must know both radii of curvature (the radii on both surfaces) and the refractive index of the glass
1/f=(n-1)(1/R1+1/R2+(n-1)*d/(n*R1*R2))
(but if you are being thorough, you should get the version of the eq which also accounts for the refractive index of the atmosphere around the glass so that you don't get surprised when your underwater telescope doesn't work as expected)
(i am guessing that the 1's that are in parenthesis with the n's probably could be replaced with the atmospheric refractive index generally assumed to be one in air or space)
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