User contributions for Goodphy
A user with 1,554 edits. Account created on 30 September 2015.
5 June 2024
- 23:1423:14, 5 June 2024 diff hist +294 Cardinal point (optics) →Nodal points: Improved sentences for clear reading. Tag: Visual edit
- 22:3922:39, 5 June 2024 diff hist +7 m Focal length →General optical systems: Clarified terms. Tag: Visual edit
- 22:2122:21, 5 June 2024 diff hist +127 Cardinal point (optics) →Nodal points: Added meaning of each terms in a figure. Tag: Visual edit
2 June 2024
- 03:3503:35, 2 June 2024 diff hist +248 Paraxial approximation Added a fact that the small-angle approximations are in dimensionless as they are approximations of trigonometric functions. Tag: Visual edit
31 May 2024
- 13:1313:13, 31 May 2024 diff hist +856 Lens →Imaging properties: Added how the Newtonian form of the lens equation can be derived. Tag: Visual edit
18 May 2024
- 02:0902:09, 18 May 2024 diff hist +1,145 m Ray tracing (physics) →Optical design: Added an optical ray tracing technique called Focal-Plane Ray Tracing. current Tag: Visual edit
12 May 2024
- 22:4122:41, 12 May 2024 diff hist +56 Lens →Compound lenses: Little more elaborate sentences. Tag: Visual edit
- 00:4500:45, 12 May 2024 diff hist +517 Exponential smoothing In the introductory section, mentioned that the double and triple exponential smoothing can be used for the prediction (while the simple exponential smoothing is not.) current Tag: Visual edit
5 May 2024
- 03:5403:54, 5 May 2024 diff hist −4 Exponential smoothing →Triple exponential smoothing (Holt Winters): Remove unnecessary empty spaces and make a word time series to be a hyperlink to the corresponding Wikipedia page. Tag: Visual edit
- 03:2303:23, 5 May 2024 diff hist +4 Exponential smoothing →Triple exponential smoothing (Holt Winters): Make a word time series as a hyperlink. Tag: Visual edit
- 03:1703:17, 5 May 2024 diff hist −1 Exponential smoothing →Double exponential smoothing (Holt linear): Remove an unnecessary empty space. Tag: Visual edit
2 May 2024
- 22:5122:51, 2 May 2024 diff hist 0 Exponential smoothing Replace a capital letter C with a small latter c. Tag: Visual edit
- 08:2908:29, 2 May 2024 diff hist +214 Lens →Compound lenses: Added the general formula of multiple thin lenses in contact Tag: Visual edit
- 08:1208:12, 2 May 2024 diff hist +227 Lens →Compound lenses: Added how to derive BFD (Back Focal Distance). Tag: Visual edit
29 April 2024
- 22:4222:42, 29 April 2024 diff hist +1,633 Lens →Compound lenses: Added how FFD (Front Focal Distance) for a two lenses system is derived. I will also add RFD (Rear Focal Distance) or BFD (Back Focal Distance). Tag: Visual edit
23 April 2024
- 22:4822:48, 23 April 2024 diff hist +123 Exponential smoothing →Comparison with moving average: Clarified terms. Tag: Visual edit
- 22:3622:36, 23 April 2024 diff hist +557 Exponential smoothing Added how the name "Exponential smoothing" is named in the introductory section because it is the first question that readers may have. Tag: Visual edit
21 April 2024
- 08:2308:23, 21 April 2024 diff hist +265 Exponential smoothing →"Exponential" naming: Added an invisible note showing a requirement of the proof about "A geometric progress is the discrete version of an exponential function.". Tag: Visual edit
- 02:5602:56, 21 April 2024 diff hist +441 Exponential smoothing →Choosing the initial smoothed value: Added some detailed explanations on terms to narrow information search range for readers. Tag: Visual edit
18 April 2024
- 22:4422:44, 18 April 2024 diff hist +1,016 Lens →Compound lenses: Added a fact that for a multiple-lenses system the imaging is cascaded through the lenses. Tag: Visual edit
17 April 2024
- 22:5822:58, 17 April 2024 diff hist +235 Exponential smoothing →Basic (simple) exponential smoothing: Added a limiting case of alpha = 0. Tag: Visual edit
15 April 2024
- 22:5622:56, 15 April 2024 diff hist +87 Exponential smoothing →Time constant: Mentioned the Taylor expansion of the exponential function to show how an approximated expression for deltaT << tau is made. Tag: Visual edit