User:Mliu92/sandbox

• [https://meta.wikimedia.org/wiki/SVG_fonts List of valid SVG fonts for Commons]
• [http://tools.wmflabs.org/svgcheck/index.php SVG check]
• [https://commons.wikimedia.org/wiki/Category:Ribbon_images_that_should_use_vector_graphics Ribbon images]

• Taiwan Referendum Act
• Lou Pai
• Coyote Point Park (historical documents/photos?)
• San Mateo Central Park (see pictures linked in San Mateo article)
• Nagao Sakurai (expand)
• Henry Liu
• Peng Wan-ru (cleanup)
• Liu Pang-yu (infobox)
• Murder of Pai Hsiao-yen (extend April–August timeline)
• Clyde Iron Works?
• Benjamin Franklin Hotel [http://archives.smdailyjournal.com/article_preview.php?id=2941&title=The%20Benjamin%20Franklin:%20San%20Mateo%E2%80%99s%20grand%20hotel&eddate=03/10/2001]
• Peninsula Hotel ?
• Norman Cecil Raab [http://cedb.asce.org/cgi/WWWdisplay.cgi?26856] and [http://www.oac.cdlib.org/search?style=oac4;titlesAZ=n;idT=UCb100996383]
• E R "Mike" Foley [http://www.sfgate.com/news/article/FOLEY-E-R-Mike-2831985.php]
• Chuck Seim [http://digitalassets.lib.berkeley.edu/roho/ucb/text/seim_chuck.pdf]
• System 80 {{cite journal |author1=Singhal, AK |author2=Srikantiah, G |title=A review of thermal hydraulic analysis methodology for PWR steam generators and ATHOS3 code applications |date=1991 |volume=25 |issue=1 |journal=Progress in Nuclear Energy |pages=7–70 |doi=10.1016/0149-1970(91)90041-M }}
• Create a gallery of Formation Badges of the British Army using the precedent of Brigade insignia of the United States Army and link it to Formation patch article.
• Leo Soong article: http://asianpacificfund.org/board/leo-soong/ http://ajw.asahi.com/article/globe/feature/usChina/AJ201403070003 http://www.nytimes.com/2003/10/30/nyregion/an-epitaph-for-madame-chiang-kai-shek-mama.html https://news.google.com/newspapers?id=SHszAAAAIBAJ&sjid=tjIHAAAAIBAJ&pg=3638%2C6854680 https://news.google.com/newspapers?id=ObceAAAAIBAJ&sjid=d88EAAAAIBAJ&pg=2281%2C1697426 https://news.google.com/newspapers?id=Lb4dAAAAIBAJ&sjid=ilEEAAAAIBAJ&pg=2380%2C1472794
• Tom Keen San Mateo:

105 Hayward St (1940 census)

• http://archives.smdailyjournal.com/article_preview.php?id=74308
• http://www.mercurynews.com/news/ci_26945705/cold-case-san-mateo-mob-hit-suspected-1952
• http://archives.chicagotribune.com/1952/02/06/page/1/article/kill-dog-track-promoter-in-blasted-auto
• https://news.google.com/newspapers?id=abMyAAAAIBAJ&sjid=DewFAAAAIBAJ&pg=1264%2C2794290
• http://www.geni.com/people/Thomas-Tomas-Keen/6000000011929137499
• Edward Bayard Heath
• Heath Baby Bullet
• Ford GN-34
• {{cite journal |url=http://libraryarchives.metro.net/DPGTL/Californiahighways/chpw_1964_marapr.pdf |title=Bay Bridge Reconstruction [Part 3] |author=Foley, E.R. |date=March–April 1964 |volume=43 |number=3–4 |pages=48–52; 59 |journal=California Highways and Public Works |publisher=Division of Highways, California Department of Public Works |accessdate=24 March 2016}}
• {{cite journal |url=http://libraryarchives.metro.net/DPGTL/Californiahighways/chpw_1962_janfeb.pdf |title=Bay Bridge: Second Phase of Reconstruction Nearing Completion |author=Raab, N.C. |date=January–February 1962 |volume=41 |number=1–2 |pages=36–43 |journal=California Highways and Public Works |publisher=Division of Highways, California Department of Public Works |accessdate=24 March 2016}}
• {{cite journal |url=http://libraryarchives.metro.net/DPGTL/Californiahighways/chpw_1960_julaug.pdf |title=Bay Bridge: First Phases of Reconstruction For Added Capacity Completed |author=Raab, N.C. |date=July–August 1960 |volume=39 |number=7–8 |pages=35–42 |journal=California Highways and Public Works |publisher=Division of Highways, California Department of Public Works |accessdate=24 March 2016}}
• http://libraryarchives.metro.net/DPGTL/bart/1961-parsons-engineering-report-to-sf-bart-district.pdf San Mateo County BART alignment
• http://libraryarchives.metro.net/DPGTL/trafficplans/1963_rapid_tranist_a_reality.pdf
• http://www.ilwu.org/wp-content/uploads/2011/08/march04dispatcher.pdf Tugboat Annie
• http://lcweb2.loc.gov/master/pnp/habshaer/ca/ca3800/ca3883/data/ca3883data.pdf paintersville bridge
• https://www.flickr.com/photos/eekim/albums/72157630154628324 which bridge is this? not rio vista.
• https://www.sanmateocourt.org/documents/grand_jury/2004/SamTrans%20vers%203.0_final.pdf SamTrans owns the PCJPB ROW?
• The Firebrand, Mabel Craft Deering {{cite news |url=http://cdnc.ucr.edu/cgi-bin/cdnc?a=d&d=SFC19070905.2.103.7 |title=The Firebrand |author= |date=5 September 1907 |volume=102 |number=97 |accessdate=16 August 2016 |newspaper=San Francisco Call}}{{cite journal |url=https://archive.org/stream/sunsetvolume00deptgoog#page/n466/mode/2up |title=The Firebrand |author=Deering, Mabel Craft |journal=Sunset Magazine |publisher=Passenger Department, Southern Pacific Company |location=San Francisco |date=September 1907 |volume=XIX |number=5 |pages=453–461 |accessdate=16 August 2016}}
• {{cite journal |url=https://archive.org/stream/sunsetvolume00deptgoog#page/n466/mode/2up |title=The Spread of San Francisco |author=Steele, Rufus |journal=Sunset Magazine |publisher=Passenger Department, Southern Pacific Company |location=San Francisco |date=September 1907 |volume=XIX |number=5 |pages=437–452 |accessdate=16 August 2016}}

• Acquired by Barium Steel 1944: [http://news.google.com/newspapers?nid=1144&dat=19440830&id=PTIgAAAAIBAJ&sjid=nUwEAAAAIBAJ&pg=5903,1728713]
• Acquired by AMCA 1973: [http://news.google.com/newspapers?nid=1946&dat=19800920&id=fZckAAAAIBAJ&sjid=raQFAAAAIBAJ&pg=6076,4851116] and [http://news.google.com/newspapers?nid=1946&dat=19730522&id=_xMyAAAAIBAJ&sjid=-qEFAAAAIBAJ&pg=3744,2155501]
• National Oilwell Varco [http://www.sppa.com/wp-content/uploads/2011/03/feb2010e-2.pdf]
• Haakon Crane (400 tons) 1977: [http://news.google.com/newspapers?nid=1144&dat=19440830&id=PTIgAAAAIBAJ&sjid=nUwEAAAAIBAJ&pg=5903,1728713]

File:Horse Axes -vector.svg

File:Horse Axes -vector.svg

File:Horse Axes -vector.svg

{{Annotated image

| image = Proceedings39amer 0233.jpg

| image-width = 730

| image-left = -45

| image-top = -720

| width = 600

| height = 368

| float = left

| annotations =

| caption = Dumbarton Point Bridge (1910)

| icon = none

}}

It can be shown that the sum of the first $n$ odd numbers is equal to $\{n\}^2$, that is, $\backslash sum\_\{k=1\}^\{n\}\; (2k-1)\; =\; \{n\}^2$

Say $n=3$. Then $\{3\}^2=9$ and the sum of the first three odd numbers is $1+3+5=9$.

Assume $\backslash sum\_\{k=1\}^\{n\}(2k-1)\; =\; \{n\}^2$

Evaluate $\backslash sum\_\{k=1\}^\{n+1\}\; (2k-1)$:

$\backslash sum\_\{k=1\}^\{n+1\}(2k-1)=\backslash sum\_\{k=1\}^\{n\}(2k-1)+2(n+1)-1$

By assumption,

$\backslash sum\_\{k=1\}^\{n\}(2k-1)\; =\; \{n\}^2$

so

$\backslash sum\_\{k=1\}^\{n+1\}(2k-1)=\backslash sum\_\{k=1\}^\{n\}(2k-1)+2(n+1)-1=\{n\}^2+2(n+1)-1$

Simplify:

$\backslash sum\_\{k=1\}^\{n+1\}(2k-1)=\{n\}^2+2n+2-1=\{n\}^2+2n+1=\{(n+1)\}^2$

ImageSize = width:800 height:300

PlotArea = left:200 bottom:120 top:0 right:100

Alignbars = justify

DateFormat = dd/mm/yyyy

Period = from:01/01/1985 till:01/01/2016

TimeAxis = orientation:horizontal format:yyyy

Legend = orientation:vertical position:bottom columns:4

ScaleMajor = increment:2 start:1985

ScaleMinor = increment:1 start:1985

Colors =

id:vg value:red legend:Vocals/Guitar

id:gk value:green legend:Guitar/Keyboard

id:b value:blue legend:Bass

id:key value:purple legend:Keyboards

id:dr value:orange legend:Drums

id:alb value:black legend:Studio_releases

LineData =

at:01/01/1986

at:01/01/1988

at:01/01/1989

at:01/01/1990

at:01/01/1992

at:30/06/1992

at:01/01/1993

at:30/06/1993

at:01/01/1994

at:01/01/1996

at:01/01/1997

at:01/01/1998

at:01/01/1999

at:01/01/2000

at:01/01/2004

PlotData =

width:10 textcolor:black align:left anchor:from shift:(10,–4)

bar:"Dr. Frank" Portman from:start till:end color:vg

bar:Jon Von Zelowitz from:start till:28/02/1993 color:vg

bar:Ted Angel from:30/09/2002 till:end color:gk

bar:Brian Stamatatos from:start till:30/06/1989 color:b

bar:Aaron Rubin from:01/07/1989 till:31/07/1993 color:b

bar:Aaron Rubin from:30/11/1993 till:30/06/1994 color:b

bar:Joel Reader from:01/01/1995 till:31/03/1999 color:b

bar:Gabe Meline from:01/07/1999 till:30/06/2002 color:b

bar:"Bobby J" Jordan from:30/09/2002 till:end color:b

bar:Erik Noyes from:31/10/1996 till:28/02/1997 color:key

bar:Erik Noyes from:31/10/1998 till:28/02/2000 color:key

bar:Alex Laipeneiks from:start till:31/07/1993 color:dr

bar:Jym Pittman from:30/11/1993 till:30/09/2013 color:dr

bar:Jaz Brown from:01/01/2014 till:end color:dr

Image:Emblem of Urawa, Saitama (1934–2001).svg|Urawa Saitama

Image:CaltrainLogo (1982).svg|1982 Caltrain logo

Image:JPBX 165 (28108962556).jpg|JPBX 165, Caltrain car in Metrolink livery

• {{USBill|99|hconres|49}} | {{USHVote|1985|53}}
• {{USBill|99|hconres|110}}
• {{USBill|99|sconres|10}}

• http://www.novelmusic.com/roland/Technical/default.htm

;Notes

{{Notelist|30em}}

Image:Nikkor13mm 6164.jpg

• 6{{nbsp}}mm {{f/}}2.8 Circular Fisheye (220°)
• 6{{nbsp}}mm {{f/}}5.6 Circular Fisheye (220°) (requires MLU (Mirror lock-up)){{cite patent | country= US | number= 3524697A | status= patent | title= Achromatic super wide-angle lens | pubdate= | gdate= 1970-08-18 | fdate= 1968-04-23 | pridate= 1967-04-27 | inventor= | invent1= Isshiki, Masaki | invent2= Matsuki, Keiji | assign1= Nikon Corp | assign2= | class= G02B13/06 | url= https://patents.google.com/patent/US3524697A/en }}
• 7.5{{nbsp}}mm {{f/}}5.6 Circular Fisheye (requires MLU)
• 8{{nbsp}}mm {{f/}}2.8 Circular Fisheye
• 8{{nbsp}}mm {{f/}}8.0 Circular Fisheye (requires MLU)
• 10{{nbsp}}mm {{f/}}5.6 OP Circular Fisheye (requires MLU)
• 16{{nbsp}}mm {{f/}}2.8 Full Frame Fisheye (180°)
• 16{{nbsp}}mm {{f/}}3.5 Full Frame Fisheye (170°){{cite patent | country= US | number= 3734600A | status= patent | title= Fisheye lens systems | pubdate= | gdate= 1973-05-22 | fdate= 1971-12-16 | pridate= 1970-12-24 | inventor= | invent1= Shimizu, Yoshitaka | assign1= Nikon Corp | assign2= | class= G02B13/06 | url= https://patents.google.com/patent/US3734600A/en }}
• 10.5?
• 8–15mm
• 16mm f/2.8 AF-D with CRC{{cite patent | country= US | number= 5434713A | status= patent | title= Fisheye lens having a short distance compensating function | pubdate= | gdate= 1995-07-18 | fdate= 1993-03-19 | pridate= 1992-03-26 | inventor= | invent1= Sato, Haruo | assign1= Nikon Corp | assign2= | class= G02B13/06 | url= https://patents.google.com/patent/US5434713A/en }}

• 13{{nbsp}}mm {{f/}}5.6
• 15{{nbsp}}mm {{f/}}3.5
• 15{{nbsp}}mm {{f/}}5.6{{cite patent | country= US | number= 3663095A | status= patent | title= Retrofocus type super-wide angle objective lens | pubdate= | gdate= 1972-05-16 | fdate= 1970-08-26 | pridate= 1970-06-05 | inventor= | invent1= Mori, Ikuo | assign1= Nikon Corp | assign2= | class= G02B13/06 | url= https://patents.google.com/patent/US3663095A/en }}
• 18{{nbsp}}mm {{f/}}4.0 uses same patent as 20/3.5 UD?
• 18{{nbsp}}mm {{f/}}3.5

File:Nikon 28mm f2.8 MF.jpg

• 20{{nbsp}}mm {{f/}}1.8
• 20{{nbsp}}mm {{f/}}2.8
• 20{{nbsp}}mm {{f/}}3.5 UD{{cite patent | country= US | number= 3549241A | status= patent | title= Extremely wide-angle object lens | pubdate= | gdate= 1970-12-22 | fdate= 1968-10-15 | pridate= 1967-10-24 | inventor= | invent1= Mori, Ikuo | assign1= Nikon Corp | assign2= | class= G02B13/04 | url= https://patents.google.com/patent/US3549241A/en }}
• 20{{nbsp}}mm {{f/}}3.5
• 20{{nbsp}}mm {{f/}}4.0
• 21{{nbsp}}mm {{f/}}4.0 (requires MLU)

• 24{{nbsp}}mm {{f/}}2.0
• 24{{nbsp}}mm {{f/}}2.8
• 28{{nbsp}}mm {{f/}}2.0
• 28{{nbsp}}mm {{f/}}2.8
• 28{{nbsp}}mm {{f/}}3.5

File:Nikon 50mm f1.4 MF.JPG

• 35{{nbsp}}mm {{f/}}1.4
• 35{{nbsp}}mm {{f/}}2.0
• 35{{nbsp}}mm {{f/}}2.8
• 28{{nbsp}}mm {{f/}}2.8 E
• 35{{nbsp}}mm {{f/}}2.5 E
• 36–72{{nbsp}}mm {{f/}}3.5 E
• 25–50{{nbsp}}mm {{f/}}4.0
• 28–45{{nbsp}}mm {{f/}}4.5
• 28–50{{nbsp}}mm {{f/}}3.5 Macro
• 28–85{{nbsp}}mm {{f/}}3.5-4.5 Macro
• 35–70{{nbsp}}mm {{f/}}3.5
• 35–70{{nbsp}}mm {{f/}}3.5 Macro
• 35–70{{nbsp}}mm {{f/}}3.3-4.5
• 35–70{{nbsp}}mm {{f/}}3.5-4.8
• 35–85{{nbsp}}mm {{f/}}2.8-4.0 (prototype only)

File:Nikon 35-105 MF zoom lens.JPG

• 35–105{{nbsp}}mm {{f/}}3.5-4.5 Macro
• 35–135{{nbsp}}mm {{f/}}3.5-4.5
• 35–200{{nbsp}}mm {{f/}}3.5-4.5 Macro

• 45{{nbsp}}mm {{f/}}2.8 GN
• 45{{nbsp}}mm {{f/}}2.8 P
• 50{{nbsp}}mm {{f/}}1.2
• 50{{nbsp}}mm {{f/}}1.4
• 50{{nbsp}}mm {{f/}}1.8
• 50{{nbsp}}mm {{f/}}2.0
• 55{{nbsp}}mm {{f/}}1.2

File:Nikon 85mm f2 MF.JPG manual-focus lens]]

• 58{{nbsp}}mm {{f/}}1.2 Noct
• 58{{nbsp}}mm {{f/}}1.4
• 50{{nbsp}}mm {{f/}}1.8 E
• 50–135{{nbsp}}mm {{f/}}3.5 Macro
• 50–300{{nbsp}}mm {{f/}}4.5
• 50–300{{nbsp}}mm {{f/}}4.5 ED

• 85{{nbsp}}mm {{f/}}1.4
• 85{{nbsp}}mm {{f/}}1.8
• 85{{nbsp}}mm {{f/}}2.0
• 105{{nbsp}}mm {{f/}}1.8
• 105{{nbsp}}mm {{f/}}2.5
• 105{{nbsp}}mm {{f/}}4.0 (pre-set)
• 120{{nbsp}}mm {{f/}}4.0 IF Medical

File:Nikon 135mm f2.8 MF.JPG

• 135{{nbsp}}mm {{f/}}2.0
• 135{{nbsp}}mm {{f/}}2.8
• 135{{nbsp}}mm {{f/}}3.5
• 100{{nbsp}}mm {{f/}}2.8 E
• 135{{nbsp}}mm {{f/}}2.8 E
• 70–210 mm {{f/}}4.0 E
• 75–150{{nbsp}}mm {{f/}}3.5 E
• 70–210 mm {{f/}}4.5-5.6

File:Nikon 80-200 f4.JPG

• 80–200 mm {{f/}}2.8 ED
• 80–200 mm {{f/}}4.0
• 80–200 mm {{f/}}4.5
• 85–250{{nbsp}}mm {{f/}}4.0-4.5

File:Nikon 200mm f4 MF.JPG

• 180{{nbsp}}mm {{f/}}2.8 ED
• 200{{nbsp}}mm {{f/}}2.0 ED-IF
• 200{{nbsp}}mm {{f/}}4.0 Q
• 200{{nbsp}}mm {{f/}}4.0

Image:Medical-nikkor.jpg with high-speed motor drive.]]

• 200{{nbsp}}mm {{f/}}5.6 Medical
• 300{{nbsp}}mm {{f/}}2.0 ED-IF
• 300{{nbsp}}mm {{f/}}2.8 ED (pre-set)
• 300{{nbsp}}mm {{f/}}2.8 ED-IF
• 300{{nbsp}}mm {{f/}}4.5 P
• 300{{nbsp}}mm {{f/}}4.5 H
• 300{{nbsp}}mm {{f/}}4.5 ED
• 300{{nbsp}}mm {{f/}}4.5 ED-IF
• 100–300{{nbsp}}mm {{f/}}5.6 Macro

• 400{{nbsp}}mm {{f/}}2.8 ED-IF
• 400{{nbsp}}mm {{f/}}3.5 ED-IF
• 400{{nbsp}}mm {{f/}}4.5 (lens head; requires CU-1 or AU-1 focus unit)
• 400{{nbsp}}mm {{f/}}5.6 ED
• 400{{nbsp}}mm {{f/}}5.6 ED-IF
• 500{{nbsp}}mm {{f/}}4.0 P ED-IF
• 500{{nbsp}}mm {{f/}}5.0 Reflex
• 500{{nbsp}}mm {{f/}}8.0 Reflex
• 600{{nbsp}}mm {{f/}}4.0 ED-IF
• 600{{nbsp}}mm {{f/}}5.6 (lens head; requires CU-1 or AU-1 focus unit)
• 600{{nbsp}}mm {{f/}}5.6 ED (lens head; requires CU-1 or AU-1 focus unit)
• 600{{nbsp}}mm {{f/}}5.6 ED-IF
• 800{{nbsp}}mm {{f/}}5.6 ED-IF
• 800{{nbsp}}mm {{f/}}8.0 (lens head; requires CU-1 or AU-1 focus unit)
• 800{{nbsp}}mm {{f/}}8.0 ED (lens head; requires CU-1 or AU-1 focus unit)
• 800{{nbsp}}mm {{f/}}8.0 ED-IF
• 1000{{nbsp}}mm {{f/}}6.3 Reflex
• 1000{{nbsp}}mm {{f/}}11.0 Reflex
• 1200{{nbsp}}mm {{f/}}11.0 (lens head; requires CU-1 or AU-1 focus unit)
• 1200{{nbsp}}mm {{f/}}11.0 ED (lens head; requires CU-1 or AU-1 focus unit)
• 1200{{nbsp}}mm {{f/}}11.0 ED-IF
• 2000{{nbsp}}mm {{f/}}11.0 Reflex
• 180–600{{nbsp}}mm {{f/}}8.0 ED
• 200–400{{nbsp}}mm {{f/}}4.0 ED
• 200–600{{nbsp}}mm {{f/}}9.5
• 360–1200{{nbsp}}mm {{f/}}11.0 ED
• 1200–1700{{nbsp}}mm {{f/}}5.6-8.0 P ED-IF

;Macro

• 45{{nbsp}}mm {{f/}}2.8 ED PC-E Micro
• 55{{nbsp}}mm {{f/}}2.8 Micro
• 55{{nbsp}}mm {{f/}}3.5 Micro
• 55{{nbsp}}mm {{f/}}4.0 UV Micro (prototype only)

Image:Nikon F with 105 mm Micro Nikkor.jpg

• 85{{nbsp}}mm {{f/}}2.8D PC Micro
• 85{{nbsp}}mm {{f/}}2.8D PC-E Micro
• 105{{nbsp}}mm {{f/}}4.5 UV Micro
• 105{{nbsp}}mm {{f/}}4.0 (bellows lens)
• 105{{nbsp}}mm {{f/}}4.0 Micro
• 105{{nbsp}}mm {{f/}}2.8 Micro
• 135{{nbsp}}mm {{f/}}4.0 (bellows lens)
• 200{{nbsp}}mm {{f/}}4.0 IF Micro

File:Nikon Series E 50mm f1.8.jpg

• 28{{nbsp}}mm {{f/}}2.8
• 35{{nbsp}}mm {{f/}}2.5
• 50{{nbsp}}mm {{f/}}1.8
• 100{{nbsp}}mm {{f/}}2.8
• 135{{nbsp}}mm {{f/}}2.8
• 36–72{{nbsp}}mm {{f/}}3.5
• 70–210 mm {{f/}}4.0
• 75–150{{nbsp}}mm {{f/}}3.5

• 25–50{{nbsp}}mm {{f/}}4.0
• 28–45{{nbsp}}mm {{f/}}4.5
• 28–50{{nbsp}}mm {{f/}}3.5 Macro
• 28–85{{nbsp}}mm {{f/}}3.5-4.5 Macro
• 35–70{{nbsp}}mm {{f/}}3.5
• 35–70{{nbsp}}mm {{f/}}3.5 Macro
• 35–70{{nbsp}}mm {{f/}}3.3-4.5
• 35–70{{nbsp}}mm {{f/}}3.5-4.8
• 35–85{{nbsp}}mm {{f/}}2.8-4.0 (prototype only)

File:Nikon 35-105 MF zoom lens.JPG

• 35–105{{nbsp}}mm {{f/}}3.5-4.5 Macro
• 35–135{{nbsp}}mm {{f/}}3.5-4.5
• 35–200{{nbsp}}mm {{f/}}3.5-4.5 Macro
• 43–86{{nbsp}}mm {{f/}}3.5
• 50–135{{nbsp}}mm {{f/}}3.5 Macro
• 50–300{{nbsp}}mm {{f/}}4.5
• 50–300{{nbsp}}mm {{f/}}4.5 ED
• 70–210 mm {{f/}}4.5-5.6

File:Nikon 80-200 f4.JPG

• 80–200 mm {{f/}}2.8 ED
• 80–200 mm {{f/}}4.0
• 80–200 mm {{f/}}4.5
• 85–250{{nbsp}}mm {{f/}}4.0-4.5
• 100–300{{nbsp}}mm {{f/}}5.6 Macro
• 180–600{{nbsp}}mm {{f/}}8.0 ED
• 200–400{{nbsp}}mm {{f/}}4.0 ED
• 200–600{{nbsp}}mm {{f/}}9.5
• 360–1200{{nbsp}}mm {{f/}}11.0 ED
• 1200–1700{{nbsp}}mm {{f/}}5.6-8.0 P ED-IF

{{OSM Location map

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|float=right

|zoom=16

|width=310

|height=470

|scalemark=20

|mark-coord1={{Coord|37.790783|-122.405616}}

|mark-coord2={{Coord|37.792024|-122.405210}}

|mark-coord3={{Coord|37.792476|-122.406024}}

|mark-coord4={{Coord|37.793365|-122.405484}}

|mark-coord5={{Coord|37.794811|-122.405380}}

|mark-coord6={{Coord|37.795069|-122.406240}}

|mark-coord7={{Coord|37.794570|-122.406979}}

|mark-coord8={{Coord|37.795734|-122.407345}}

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|shape-color2=#0a0

|shape-color5=#0a0

|shape-color9=#00f

|fullscreen-option=1

|caption=Selected locations in Chinatown, San Francisco:

1. Dragon Gate
2. St Mary's Square
3. Sing Chong and Sing Fat buildings
4. Nam Kue School
5. Portsmouth Square
6. Chinese Telephone Exchange
7. Tin How Temple
8. Ross Alley / Fortune Cookie factory
9. Chinese Hospital
10. Six Companies

}}

• {{cite web |url=https://www.leagle.com/decision/incaco20090513025 |title=People v. Merel |date=12 May 2009 |publisher=Court of Appeals of California, First Appellate District, Division Four |accessdate=31 March 2018}}

;Notes

{{notelist|25em}}

{{OSM Location map

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|zoom=10

|width=480 |height=480

|scalemark=20

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|shape-color1=#ff0

|shape-outline1=#000

|mark-size1=20

|mark-coord1 ={{Coord|37.764323|-122.393529}}

|mark-title1 =PS1 (San Francisco, milepost 1.3)

|mark-coord2 ={{Coord|37.711621|-122.401446}}

|mark-title2 =PS2 ({{cals|Bayshore}}, MP 5.0)

|mark-coord3 ={{Coord|37.656269|-122.405145}}

|mark-title3 =TPS1 ({{cals|South San Francisco}}, MP 9.2) |shape-color3=#808 |shape-outline3=#fff

|mark-coord4 ={{Coord|37.588637|-122.365510}}

|mark-title4 =PS3 ({{cals|Broadway}}, MP 15.0)

|mark-coord5 ={{Coord|37.536998|-122.296716}}

|mark-title5 =PS4 ({{cals|Hillsdale}}, MP 20.4)

|mark-coord6 ={{Coord|37.474986|-122.213525}}

|mark-title6 =SWS1 ({{cals|Redwood City}}, MP 26.7 [option 1] or MP 26.2 [option 2]) |shape-color6=#08f

|mark-coord7 ={{Coord|37.426329|-122.137518}}

|mark-title7 =PS5 ({{cals|San Antonio}}, MP 32.0)

|mark-coord8 ={{Coord|37.378835|-122.031937}}

|mark-title8 =PS6 ({{cals|Sunnyvale}}, MP 38.7)

|mark-coord9 ={{Coord|37.345977|-121.921249}}

|mark-title9 =TPS2 ({{cals|College Park}}, MP 46.0) |shape-color9=#808 |shape-outline9=#fff

|mark-coord10={{Coord|37.305246|-121.879079}}

|mark-title10=PS7 ({{cals|Tamien}}, MP 49.7 [Variant C] or MP 49.8 [Variant D])

|fullscreen-option=1

|caption=Proposed electrical stations for PCEP (closest train stop and milepost){{cite report |chapter-url=http://www.caltrain.com/Assets/Caltrain+Modernization+Program/DEIR/Chapter+2+Project+Description.pdf |title=Peninsula Corridor Electrification Project EIR |chapter=2: Project Description |author=ICF International |date=February 2014 |publisher=Peninsula Corridor Joint Powers Board |accessdate=14 June 2018}}{{cite report |url=https://www.transit.dot.gov/sites/fta.dot.gov/files/docs/PCEP_Re-Eval_Full_020416.pdf |title=Caltrain Peninsula Corridor Electrification Project Environmental Re-Evaluation for Proposed Project Changes After Finding of No Significant Impact (December 2009); Changed Traction Power Facility Locations, Overhead Contact System and Electrical Safety Zone Alignments, and Right of Way Acquisition |author1=ICF International |author2=Walter, Rich |date=February 2016 |publisher=Federal Transit Administration |accessdate=14 June 2018}} {{flatlist|

• {{color box|#ff0|Paralleling Station|#000|border=#ff0}}
• {{color box|#808|Traction Power Substation|#fff|border=#808}}
• {{color box|#08f|Switching Station|#000|border=#08f}}}}

|auto-caption=1

}}

Power is supplied to the trains through an overhead contact system (OCS), consisting of a messenger wire, which assumes a parabolic shape due to sag, and a contact wire suspended below the messenger wire. The contact wire is nearly parallel to the ground, and supplies traction current to the pantograph of an electric train's. Both the messenger wire and the contact wire are energized with single-phase alternating current at 25kV with a frequency of 60 Hz. This allows the OCS to be used for both Caltrain and future California High-speed Rail service, and this electrical configuration matches that of Amtrak (on the Northeast Corridor) and portions of the New Jersey Transit commuter rail system.

Contact wire height is planned to vary between {{convert|16|to|23|ft}}, depending on overhead clearance required, with the messenger wire another {{convert|2|to|5|ft}} above that, and pole height will vary between {{convert|30|to|50|ft}}. Nominal clearance under the contact wire will be {{convert|23|ft}} to accommodate freight and non-electrified passenger rail service. Poles are nominally spaced {{convert|180|to|200|ft}} apart, but can be reduced to {{convert|75|ft}} for the tightest-radius bends (just south of {{cals|San Francisco}} and just north of {{cals|San Jose}}). Typical pole spacing in bends will be {{convert|120|to|150|ft}}, and for straight sections of track, maximum spacing is {{convert|230|ft}} between poles.

There may be a situation where an uneven number of cells may need to be aligned with each other, for instance, a single row may be split into two cells (rows) in one column and three cells (rows) in an adjacent column. If $n$ is the maximum number of cells in a given row, this can be handled by the following procedure:

1. Set the rowspan to $n+1$ for any cell in that row that is a single cell.

Wiki markup:

class="wikitable" style="text-align:center;"
Column 1
Column 2
Column 3
colspan="4" | Column 4
rowspan="4" | A1

| rowspan="2" | B2
| C3
| colspan="4" | D4
rowspan="2" | E3

| colspan="2" rowspan="2" | F4
| colspan="2" rowspan="2" | G5
rowspan="2" | H2
I3

| J4
| colspan="2" | K5
| L6

As it appears in a browser:

As it appears in a browser:

Wiki markup:

class="wikitable" style="text-align:center;"
Column 1
Column 2
Column 3
colspan="4" | Column 4
rowspan="4" | A1

| rowspan="2" | B2
| C3
| colspan="4" | D4
rowspan="2" | E3

| colspan="2" rowspan="2" | F4
| colspan="2" rowspan="2" | G5
rowspan="2" | H2
I3

| J4
| colspan="2" | K5
| L6

As it appears in a browser:

looks down from Chinatown over a foggy bay ...

https://hoodline.com/2016/09/touring-chinatowns-fading-neon-lights-part-1

https://hoodline.com/2016/09/touring-chinatown-s-fading-neon-signs-part-2

{{reflist}}