General Information

Serial #

N/A

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

Wood

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

26.0 cm

Width

23.0 cm

Height

44.0 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Chemistry

Category

Demonstration & teaching equipment

Sub-Category

N/A

Manufacturer

AKA

Unknown

Country

Unknown

State/Province

Unknown

City

Unknown

Context

Country

Canada

State/Province

Ontario

Period

1940s +

Canada

From acquisition proposal "From laboratory of National Research Council of Canada, one of Canada's foremost research establishments in number of scientific & technological areas. Model was developed by NRC scientist Dr. Don Stedman. In 1930s he expressed belief that there were more than 92 elements, an idea subsequently found to be correct."

Function

A 3D representation of the periodic table of the elements, consisting of cyclic spiral arrangement of elements. Hydrogen is at the apex and the series of elements is arranged in spiral, including the as yet undiscovered heavy elements of the 1940’s/50’s.

Technical

From acquisition proposal "According to Dr. Stedman (ref. 2), this arrangement has advantage of separating each type of element without ambiguity. It accommodates rare earth & viii groups as integral & significant part of orderly development of table. Opposing nature of electropostive & electro- negative elements is clearly shown."

Area Notes

Unknown

Details

Markings

Handwritten on model are the periodic elements.

Missing

Appears complete.

Finish

Wood is painted white, possibly with lead paint and has black handwritten print. Base is made of wood and is painted black.

Decoration

N/A