File:Speed of Light Experiment San Jacinto Mountain.jpg

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Description	English: County of Riverside Historical Maker No. 26 Speed-of-Light Experiment From this location instruments reflected light in 1926 to Mount Wilson, 82 miles northwest. The work was one of a series of experiments conducted by Nobel Prize-winning scientist Dr. Albert A. Michelson to refine the value of the speed of light. Although smoke generated in the valley below prevented measurements from being taken, the experiment encouraged Dr. Michelson to devise more accurate means of measuring the speed of light. Marker donated by San Jacinto Mountain residents and placed in cooperation with the Billy Holcomb Chapter of E Clampus Vitus and the Riverside County Historical Commission.
Date	8 September 2020, 18:31:51
Source	Own work
Author	Mary Rysdale

Camera location	33° 45′ 33.05″ N, 116° 44′ 41.45″ W	View this and other nearby images on: OpenStreetMap	33.759181; -116.744846

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I, the copyright holder of this work, hereby publish it under the following license:

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This image was uploaded as part of Wiki Loves Monuments 2020.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	03:57, 27 October 2020		4,032 × 1,960 (1.46 MB)	M Rysdale (talk \| contribs)	Uploaded own work with UploadWizard

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Metadata

This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.

Camera manufacturer	samsung
Camera model	SM-G892A
Exposure time	1/120 sec (0.0083333333333333)
F-number	f/1.7
ISO speed rating	200
Date and time of data generation	18:31, 8 September 2020
Lens focal length	4.25 mm
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Latitude	33° 45′ 33.05″ N
Longitude	116° 44′ 41.44″ W
Altitude	1,842.793 meters above sea level
Width	4,032 px
Height	1,960 px
Orientation	Normal
Horizontal resolution	72 dpi
Vertical resolution	72 dpi
Software used	G892AUCS5CTH1
File change date and time	18:31, 8 September 2020
Y and C positioning	Centered
Exposure Program	Normal program
Exif version	2.2
Date and time of digitizing	18:31, 8 September 2020
Meaning of each component	Y Cb Cr does not exist
APEX shutter speed	6.904
APEX aperture	1.53
APEX brightness	2.32
APEX exposure bias	0
Maximum land aperture	1.53 APEX (f/1.7)
Metering mode	Center weighted average
Light source	Unknown
Flash	Flash did not fire
Supported Flashpix version	1
Color space	sRGB
Sensing method	One-chip color area sensor
Scene type	A directly photographed image
Exposure mode	Auto exposure
White balance	Auto white balance
Focal length in 35 mm film	26 mm
Scene capture type	Standard
Unique image ID	F12QSJA00SM F12QSKB01SB
GPS time (atomic clock)	01:31
GPS date	9 September 2020
GPS tag version	0.0.2.2

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File:Speed of Light Experiment San Jacinto Mountain.jpg

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inception

8 September 2020

coordinates of the point of view

33°45'33.052"N, 116°44'41.446"W

source of file

original creation by uploader

participant in

Wiki Loves Monuments 2020

exposure time

0.00833333333333333333 second

f-number

1.7

focal length

4.25 millimetre

ISO speed

200

media type

image/jpeg

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photograph

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