fluid flow projection apparatus
Date: circa 1960
Inventory Number: 1998-1-0204
Classification: Demonstration Apparatus
Subject:
Maker: Soviet Russian
Supplier: The Ealing Corporation (founded 1961)
Cultural Region:
Dimensions:
5.5 x 14.3 x 20 cm (2 3/16 x 5 5/8 x 7 7/8 in.)
Material:
Description:
One of the few objects in the CHSI collection made in the U.S.S.R. This one is made of sheet metal and is rectangular with round corners. It is equipped with a handle and a pair of paddle wheels. The paddles create a direct current pushing the water around fins inside the apparatus. A glass window at the bottom of the instrument is designed to show the water current on a projector screen. Obstacles that would have been put in the path of the water flow are missing.
In Collection(s)
Signedunsigned
Inscribedon tag: MADE IN / U.S.S.R.
FunctionA demonstration apparatus that shows how water current flows. According to the Ealing Corporation, which imported Russian demonstration instruments to the USA, this instrument is thus described: "This apparatus is placed on the stage of a vertical projector... The hand water wheel is turned and a clear image is projected on the circumfluent patterns made as water flows by the various obstacles provided."
"The trough is filled with a quarter inch of water and some fine, light substance such as cork dust or mica powder is sprinkled on the water. The projector is then focused on this powder. Six obstacles as illustrated are provided. One of these is placed on the projection window and when the hand water wheel is turned the pattern formed by the water flowing past the obstacle is clearly projected. A series of fins direct the water in a straight line across the projection window."
"The trough is filled with a quarter inch of water and some fine, light substance such as cork dust or mica powder is sprinkled on the water. The projector is then focused on this powder. Six obstacles as illustrated are provided. One of these is placed on the projection window and when the hand water wheel is turned the pattern formed by the water flowing past the obstacle is clearly projected. A series of fins direct the water in a straight line across the projection window."
Curatorial RemarksThanks to David Pantalony for providing basic historical information on this instrument.
Primary SourcesThe Ealing Corporation, "Science Teaching Apparatus Manufactured in Russia" (Cambridge: The Ealing Corporation, ca. 1960), 4.