Densitometer
Use this image
Can I reuse this image without permission? Yes
Object images on the Ingenium Collection’s portal have the following Creative Commons license:
Copyright Ingenium / CC BY-NC-ND (Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
ATTRIBUTE THIS IMAGE
Ingenium,
2000.0121.001
Permalink:
Ingenium is releasing this image under the Creative Commons licensing framework, and encourages downloading and reuse for non-commercial purposes. Please acknowledge Ingenium and cite the artifact number.
DOWNLOAD IMAGEPURCHASE THIS IMAGE
This image is free for non-commercial use.
For commercial use, please consult our Reproduction Fees and contact us to purchase the image.
- OBJECT TYPE
- MICRO
- DATE
- 1945
- ARTIFACT NUMBER
- 2000.0121.001
- MANUFACTURER
- Leeds & Northrup Co.
- MODEL
- 6700-P-1
- LOCATION
- Philadelphia, Pennsylvania, United States of America
More Information
General Information
- Serial #
- 726754
- Part Number
- 1
- Total Parts
- 2
- AKA
- N/A
- Patents
- N/A
- General Description
- METAL CASING & PARTS; SYNTHETIC CONTROLS, SCALES, PARTS; GLASS TUBES
Dimensions
Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.
- Length
- 101.0 cm
- Width
- 55.0 cm
- Height
- 59.0 cm
- Thickness
- N/A
- Weight
- N/A
- Diameter
- N/A
- Volume
- N/A
Lexicon
- Group
- Astronomy
- Category
- Research
- Sub-Category
- N/A
Manufacturer
- AKA
- Leeds Northrup
- Country
- United States of America
- State/Province
- Pennsylvania
- City
- Philadelphia
Context
- Country
- Canada
- State/Province
- Ontario
- Period
- CA. 1945 +
- Canada
-
INSTRUMENT USED IN HIS SPECTROSCOPY LAB BY DISTINGUISHED BRITISH-CANADIAN PHYSICIST DR. R.W. NICHOLLS, ACQUIRED AFTER HIS MOVE FROM UNIV. OF LONDON TO UNIV. OF WESTERN ONTARIO IN 1948, & THEN MOVED TO YORK UNIVERSITY WHEN HE TRANSFERRED THERE TO HEAD NEW PHYSICS DEPT. IN 1965. - Function
-
INSTRUMENT USED TO SCAN SPECTRA TO PRODUCE GRAPHICAL CHART OF DENSITY OF PHOTOGRAPHIC SPECTRUM SO THAT LINES & LINE STRENGTHS COULD BE MEASURED TO DETERMINE RELATIVE & ABSOLUTE DENSITIES FOR PARTICULAR ATOMS AND/OR MOLECULES, FOR EXAMPLE AS MIGHT BE OBSERVED IN AURORA. - Technical
-
EXAMPLE OF COMMERCIALLY MADE RESEARCH GRADE SPECTROSCOPY INSTRUMENT OF 1940'S. L&N MICRODENSITOMETER WAS USED BY MANY STUDENTS INCLUDING PHD STUDENTS DON MACEWEN (PROF. EMERITUS AT UNIV. OF SASKATCHEWAN) & WALT DEWLEY (NOW AT UNIV. OF WATERLOO). - Area Notes
-
Unknown
Details
- Markings
- PLATE READING "LEEDS & NORTHRUP CO./ PHILADELPHIA PENNSYLVANIA/ MADE IN U.S.A./ CAT. NO./ 6700-P-1/ SERIAL NO./ 726754".
- Missing
- UNKNOWN
- Finish
- BLACK CRINKLE FINISH ON CASING; PLATED & METALLIC PARTS; BLACK SYNTHETIC CONTROLS; WHITE SCALE; GREY POWER CORD.
- Decoration
- N/A
CITE THIS OBJECT
If you choose to share our information about this collection object, please cite:
Leeds & Northrup Co., Densitometer, circa 1945, Artifact no. 2000.0121, Ingenium – Canada’s Museums of Science and Innovation, http://collections.ingeniumcanada.org/en/id/2000.0121.001/
FEEDBACK
Submit a question or comment about this artifact.
More Like This
![...](https://files.ingeniumcanada.org/items/coll/80/697/2000-0121-002-aa-cs.jpeg)
![No image available.](https://files.ingeniumcanada.org/static/No_image_sq.png)
![...](https://files.ingeniumcanada.org/items/coll/80/711/2000-0117-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/80/705/2000-0119-002-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/80/704/2000-0120-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/80/701/2000-0120-002-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/80/707/2000-0119-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/80/709/2000-0118-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/63/013/1992-2405-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/62/992/1992-2420-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/72/488/1995-0390-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/72/489/1995-0389-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/72/476/1995-0399-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/62/985/1992-2427-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/39/786/1981-1835-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/39/781/1981-1840-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/72/483/1995-0394-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/132/734/2004-0348-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/63/027/1992-2393-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/58/180/1988-0394-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/54/884/1987-0865-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/101/670/1971-0068-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/110/463/1975-0048-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/80/690/2000-0123-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/39/783/1981-1838-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/133/520/2004-0372-004-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/70/666/1995-1294-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/62/507/1991-0183-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/63/000/1992-2415-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/54/883/1987-0866-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/80/693/2000-0122-003-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/133/522/2004-0372-006-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/69/206/1994-0230-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/80/691/2000-0122-004-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/112/699/1977-0688-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/105/961/1973-0052-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/46/874/1984-0989-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/307/760/2004-0369-003-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/133/517/2004-0372-001-aa-cs.jpeg)
![No image available.](https://files.ingeniumcanada.org/static/No_image_sq.png)
![...](https://files.ingeniumcanada.org/items/coll/58/179/1988-0395-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/133/518/2004-0372-002-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/133/519/2004-0372-003-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/133/521/2004-0372-005-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/307/759/2004-0369-002-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/80/694/2000-0122-002-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/70/664/1995-1294-002-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/307/757/2004-0369-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/51/636/1986-0183-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/106/941/1974-0382-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/168/174/2002-0890-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/108/460/1975-0615-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/107/178/1974-0243-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/111/896/1976-0207-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/111/892/1976-0209-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/80/696/2000-0122-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/106/937/1974-0385-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/111/894/1976-0208-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/101/690/1971-0039-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/76/496/1997-0209-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/58/174/1988-0400-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/76/474/1997-0221-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/39/767/1981-1844-001-aa-cs.jpeg)
![No image available.](https://files.ingeniumcanada.org/static/No_image_sq.png)
![...](https://files.ingeniumcanada.org/items/coll/38/894/1980-0409-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/58/181/1988-0393-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/69/434/1994-0151-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/76/515/1997-0201-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/115/178/1978-0637-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/108/464/1975-0611-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/106/955/1974-0373-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/101/678/1971-0055-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/112/742/1977-0654-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/101/677/1971-0056-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/102/759/1972-0587-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/84/157/2003-0167-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/72/471/1995-0401-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/101/680/1971-0053-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/101/681/1971-0052-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/101/683/1971-0050-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/108/463/1975-0612-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/101/682/1971-0051-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/101/431/1971-0127-001-aa-cs.jpeg)
![No image available.](https://files.ingeniumcanada.org/static/No_image_sq.png)
![...](https://files.ingeniumcanada.org/items/coll/305/230/1974-0244-001-aa-cs.jpeg)
![No image available.](https://files.ingeniumcanada.org/static/No_image_sq.png)
![...](https://files.ingeniumcanada.org/items/coll/169/000/2009-0175-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/169/001/2009-0176-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/78/471/1998-0275-001-aa-cs.jpeg)
![No image available.](https://files.ingeniumcanada.org/static/No_image_sq.png)
![...](https://files.ingeniumcanada.org/items/coll/168/175/2002-0890-002-aa-cs.jpeg)
![No image available.](https://files.ingeniumcanada.org/static/No_image_sq.png)
![...](https://files.ingeniumcanada.org/items/coll/133/524/2004-0373-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/133/525/2004-0373-002-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/133/526/2004-0373-003-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/46/710/1984-1144-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/44/979/1983-0571-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/72/473/1995-0400-001-aa-cs.jpeg)
![...](https://files.ingeniumcanada.org/items/coll/45/965/1983-0099-001-aa-cs.jpeg)
![No image available.](https://files.ingeniumcanada.org/static/No_image_sq.png)