Smithsonian Contributions to Knowledge, Volumen29

Smithsonian Institution, 1903

Physics including astronomy natural philosophy chemistry	1

ARTICLE II 980 On the Densities of Oxygen and Hydrogen and on the Ratio of their	43

ON THE DENSITY OF OXYGEN FIRST SERIES OF DETERMINATIONS I Introduction	1

Measurement of Capacities of Globes	2

Preliminary Weighing of Globes	3

Auxiliary Weights for Hydrostatic Weighings	4

Hydrostatic Weighing of Globes 6 Expansion of Water and of Glass	6

Solid Contents of Globes	7

Capacity of Connecting Tubes	78

Remarks	79

Final Result for the Density of Hydrogen	80

Bibliography	29

81	46

86	64

87	73

88	79

Modern literature	9

Correction for Compression of Globes	10

AirPumps and Exhaustion	11

Measurement of the Degree of Exhaustion Effected	12

Manipulation of Globes while Filling with Oxygen PAGE I 2 3 4 6 ΙΟ II I I 14 16 17 18 18 19 21 22 28 30 31	13

Preparation of Oxygen	14

Purity of the Oxygen Obtained from Potassium Chlorate	15

Measurements of Temperature and Pressure	22

Balance Used in the First Series of Experiments	28

Verification of the Weights Employed	30

Results and Reduction	31

Second Method of Determining the Density of Oxygen 21 Standard of Pressure and Temperature	33

Desiccators for Holding Globes	35

Drying the Air in the Desiccators	36

vill THIRD SERIES OF DETERMINATIONS པ	51

Filling the Globes with Oxygen	52

Measurement of Pressure	53

Observations and Results	54

Final Result for the Density of Oxygen PART IION THE DENSITY OF HYDROGEN 56 5555 57 1 Introduction	56

Observations and Results	59

Second Method	61

Filling Globes with Hydrogen	62

Observations and Results	63

NEW METHOD OF DETERMINING THE DENSITY OF HYDROGEN	64

Introduction	65

Capacity of Connecting Tubes	67

Exhaustion of Globes	69

Weighing the Tube Containing Palladium 71	71

Measurement of Pressure 21 Second Weighing of the Palladium	72

Verification of Accuracy of Weights	73

Sources of Error	74

Reason for Constructing a Second Apparatus	75

Connection of Globes to Pump and Barometer	77

Obituary notices of distinguished individuals	12

Filling Globes with Oxygen	24

Balance Employed Mechanism for Weighing by Reversal	25

Weighing by Reversal	26

Change of Surfaces of Globes	27

Preventing Leakage of Globes when Exhausted	28

Correction for Difference of Volumes	29

92	22

1126 A Determination of the Ratio of the Specific Heats at Constant

INTRODUCTORY 1	1

Eudiometric Analysis of Electrolytic	10

SYSTEMATIC ERRORS 11	11

RESULTS 25	25

Density of Electrolytic Gas Observations	16

Observations	30

Reduction of Observations	31

Results 32	32

33	33

35	35

36	36

37	37

43	43

49	44

50	46

TO DIFFUSE KNOWLEDGE It is proposed to publish occasionally separate	ii

These treatises may occasionally consist of valuable memoirs translated	1

Manipulator for Regulating the Progress of the Combustion	7

Completeness of Drying Gases with Phosphorus Pentoxide	13

Supersaturation Time losses 17 Minimum pressure decrement supersaturation	118

Naphthalene in Benzol	124

III	126

PAGE	171

Título	Smithsonian Contributions to Knowledge, Volumen29
Colaborador	Smithsonian Institution
Editor	Smithsonian Institution, 1903
Procedencia del original	Universidad de Minnesota
Digitalizado	11 Jul. 2016

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