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Charles Vernon Boys' Original Gravitational Apparatus, 1889

Charles Vernon Boys' Original Gravitational Apparatus, 1889

1889
'Rainbow Cup' scientific toy

'Rainbow Cup' scientific toy

1911-1930
'Rainbow Cup' scientific toy

'Rainbow Cup' scientific toy

1911-1930
Quartz Fibres by Sir Charles Vernon Boys, 1887-1892

Quartz Fibres by Sir Charles Vernon Boys, 1887-1892

1887-1892
Ellipsograph by Sir Charles Vernon Boys, c 1880-1920.

Ellipsograph by Sir Charles Vernon Boys, c 1880-1920.

1880-1920
Instructions for "The Rainbow Cup" educational toy

Instructions for "The Rainbow Cup" educational toy

1911-1930
Boys' Radiomicrometer, 1887-1900

Boys' Radiomicrometer, 1887-1900

1887-1900
Boys' original 'Rainbow Cup'

Boys' original 'Rainbow Cup'

1911
Model of a polar planimeter

Model of a polar planimeter

1880-1882
Fluorescent Alcohol Thermometer by C. V. Boys, 1880-1885

Fluorescent Alcohol Thermometer by C. V. Boys, 1880-1885

1880-1885
Length of Boys' Quartz Fibre in Display Case, 1887-1892

Length of Boys' Quartz Fibre in Display Case, 1887-1892

1887-1892
Fluorescent Alcohol Thermometer by C. V. Boys, 1880-1885

Fluorescent Alcohol Thermometer by C. V. Boys, 1880-1885

1880-1885
Model of a machine for solving equations

Model of a machine for solving equations

1875-1885
Arrow used with Original Boys' bow for Shooting Quartz Fibres, 1887

Arrow used with Original Boys' bow for Shooting Quartz Fibres, 1887

1887
Boys fluorescent alcohol thermometer

Boys fluorescent alcohol thermometer

1878
Arrow used with the Original Boys' Bow for Shooting Quartz Fibres, 1887

Arrow used with the Original Boys' Bow for Shooting Quartz Fibres, 1887

1887
Fluorescent Alcohol Thermometer by C. V. Boys, 1880-1885

Fluorescent Alcohol Thermometer by C. V. Boys, 1880-1885

1880-1885
Boys circular spiral fluorescent alcohol thermometer

Boys circular spiral fluorescent alcohol thermometer

Storage Frame for Boys' Original Quartz Fibre Bow, 1887-1892

Storage Frame for Boys' Original Quartz Fibre Bow, 1887-1892

1887-1892
Fluorescent Alcohol Thermometer by C. V. Boys, 1880-1885

Fluorescent Alcohol Thermometer by C. V. Boys, 1880-1885

1880-1885
Adjustment dial for Boy's Radio-Micrometer

Adjustment dial for Boy's Radio-Micrometer

1893
Cover for Boy's Radio-Micrometer

Cover for Boy's Radio-Micrometer

1893
Thermometer for Charles Vernon Boys' Gravitational Apparatus

Thermometer for Charles Vernon Boys' Gravitational Apparatus

1889
Case for C.V. Boys' curve drawing integrator

Case for C.V. Boys' curve drawing integrator

1880-1885
2 Boys straight single-spiral fluoroscent alcohol thermometers

2 Boys straight single-spiral fluoroscent alcohol thermometers

1878
Six small pieces of quartz rod

Six small pieces of quartz rod

1887-1892
Spheres from torsion balance

Spheres from torsion balance

1889
C V Boys' radio-micrometer, with outer casing removed, 1907.

C V Boys' radio-micrometer, with outer casing removed, 1907.

1907
Bow used for Manufacture of Fine Quartz Fibres, 1887-1892

Bow used for Manufacture of Fine Quartz Fibres, 1887-1892

1887-1892
Model showing the principle of the disc cylinder integrator

Model showing the principle of the disc cylinder integrator

1880-1882
Model showing the principle of the disc cylinder integrator

Model showing the principle of the disc cylinder integrator

1880-1882
Wooden component for Charles Vernon Boys' Gravitational Apparatus

Wooden component for Charles Vernon Boys' Gravitational Apparatus

1889
Box for torsion balance components

Box for torsion balance components

1889
Boy's Radio-Micrometer

Boy's Radio-Micrometer

1893
Charts from Boys' Torsion Balance

Charts from Boys' Torsion Balance

1889
Ten Photographs in one Frame Illustrating Flying Shot & Bullets

Ten Photographs in one Frame Illustrating Flying Shot & Bullets

1892
C.V. Boys' integraph with case

C.V. Boys' integraph with case

1880-1885
Boys' original lightning camera, made by Boys in 1900

Boys' original lightning camera

1900
Boys' original bow with arrow for shooting quartz fibres (in wooden frame)

Boys' original bow with arrow

1887-1892
Boys' gas calorimeter, by A. Gallenkamp & Co. Ltd., London, England, 1905-1923. Complete with governor but without meter. 2 reading lenses and small measuring cylinder missing. (see part records)

Boys' gas calorimeter

1905-1923
Boys' torsion balance by Cambridge Scientific Instrument Co., 1889.

Boys' torsion balance and components

1889
[Miscellaneous technical drawings (3) relating to C.V. Boys' recreation of the Cavendish experiment / C.V. Boys. ca.1888. 3 sheets : line drawings, pencil drawing. One bears ms. annotations, one shows plan and side view of dummies and note 'Dummies not used', one shows plan and side elevation of room]

[Miscellaneous technical drawings (3)]

circa 1888
Boy's apparatus for determining the mechanical equivalent of heat by The Cambridge Scientific Instrument Company, Cambridge, England, 1884. From The Physical Laboratory of the Science and Arts Department, South Kensington.

Boy's Mechanical Equivalent of Heat Apparatus, 1884

1884
[Technical drawings (3) of 'optical compass' used by C.V. Boys in his recreation of the Cavendish experiment / C.V. Boys. ca.1888. 3 sheets, line drawings with wash; 2 bear ms. annotations; all 3 bear, in pencil, 'Opt. Compass'. No scale]

[Technical drawings (3) of 'optical compass']

circa 1888
Boys radio-micrometer made in 1907 by, The Cambridge Scientific Instrument Co. Ltd., Cambridge, England, no.5426 with wooden box (sighting tube and several nuts missing)

C V Boys' radio-micrometer, with outer casing removed, 1907.

1907
[Ms. observations (24p.) taken by C.V. Boys during his repetition of the 'Cavendish experiment'. 1890s]

[Observations taken during Boys' repetition of the 'Cavendish experiment']

1890-1899
[Sketches, with notes, re apparatus used in his repetition of the 'Cavendish experiment'/C.V. Boys. c.1890-1895]

[Sketches, with notes, re 'Cavendish experiment' by C.V. Boys]

circa 1890-1895
[Portfolio of result traces, summaries of results, notes etc. re repetition by Boys of the 'Cavendish experiment' / C.V. Boys. 1891-1894. Comprise leaves of trace results numbered 1-5 (Sept-Oct 1892) and 10-24 (Aug 1893-Jan 1894), plus 7 other, unnumbered leaves dated 1891-2. With 10 separately clipped together sets of ms. notes, one of which includes letters from A.G. Greenhill (2) and J.H. Poynting (1), all of May 1894, and is prefaced by a 1-page 'History' of the experiment, a chronology chiefly (but briefly) covering 15 Sept 1892 to 13 Jan 1894. Several of the sets of notes make reference to specific numbered experiments as they appear on certain book pages, probably those of his three notebooks, inv. no. 2000-1186 (MS 443)]

Portfolio of result traces and notes etc. re repetition by Boys of the 'Cavendish experiment'

1891-1894
Boy's Radio-Micrometer with two suspensions (not seen) and cover, by The Cambridge Scientific Instrument Company, Cambridge, England, 1889-1893.

Boys' Radio-Micrometer, 1889-1893

1889-1893
Four silver cylinders from Boys' torsion balance, 1899.

Four silver cylinders from Boys' torsion balance

1889