Bernoulli, Daniel - Hydrodynamica, sive De viribus et motibus fluidorum commentarii

Scan	Original
61	47
62	48
63	49
64	50
65	51
66	52
67	53
68	54
69	55
70	56
71	57
72	58
73	59
74	60
75
76	62
77	63
78	64
79	65
80	66
81	67
82	68
83	69
84	70
85	71
86	72
87	73
88	74
89	75
90	76

250236HYDRODYNAMICÆ locitati qua globus exploditur, ex data vi elaſtica auræ globum ejicientis, ita
viciſſim patet, ex obſervata illa altitudine vim auræ elaſticam deduci poſſe,
eſt enim
n = α: (b P log. {a/b}).

Exinde poterit vis elaſtica pulveris pyrii ſi non accurate definiri, ſaltem
ad terminos reduci, quos certe ſuperabit. At quæres, qui altitudo a expe-
rimento determinari poſſit; ad quod reſpondeo, poſſe eam ſat accurate col-
ligi ex tempore, quod globus verticaliter ſurſum ejectus ab exploſionis pun@
cto inſumit, dum in terram delabitur habita in calculo aëris reſiſtentiæ ratio-
ne. Transſcribam huc experimenta in comm. Acad. Petrop. tom. 2. p. p. 338 &
339 recenſita, quorum calculum inſtitui factis, ratione aëris reſiſtentiæ hy-
potheſibus, gravitates ſpecificas ferri & aëris eſſe ut 7650 ad 1 & aërem, in
quo globus aſcendit, uniformis eſſe denfitatis: gravitatum ſpecificarum ratio
paullo major aſſumta fuiſſe videtur quam debebat, ſed compenſabitur in al-
tiſſimis jactibus error à diminutione aëris denſitatum verſus ſuperiora.

„Tormenti ſitus omni accuratione ad perpendiculum erat accommo-
datus & ſingulis vicibus in hunc ſitum reponebatur atque firmabatur: ſin-
gula experimenta fuerunt repetita: Erat autem longitudo animæ 7, 7. ped.
angl. diameter globi erat 0, 2375 ped. diameter animæ menſurata non fuit
neque magnitudo luminis accenſorii: qualibet vice ponderabatur quantitas
pulveris pyrii adhibiti & pendulo definiebatur tempus à puncto exploſionis
ad punctum, quo globus in terram cecidit: tabula ſequens exhibet, tum
quæ obſervata, tum quæ calculo inde eruta fuerunt.

11
quant. pulv. \\ pyr. numero \\ unciar. holl. \\ expreſſ. # tempus aſc. \\ & deſcens. in \\ min. ſec. ob-\\ ſerv. # altit. jactus \\ in aëre reſiſt, \\ per calculum \\ in ped. Angl. # temp. aſc. in \\ aëre reſiſt. \\ per calculum \\ in min. ſec. # temp. deſc. in \\ aëre reſiſt. \\ per calculum \\ in min. ſec. # altit. jactus in \\ vacuo per \\ calculum in \\ ped. Angl. # temp. aſcenſ. \\ & deſc. in va- \\ cuo per calc. \\ in min. ſec.
I # II # III # IV # V # VI # VII
{1/2} # 11 # 486 # 5, 42 # 5, 58 # 541 # 11, 6
2 # 34 # 4550 # 14, 37 # 19, 63 # 13694 # 58
4 # 45 # 7819 # 16, 84 # 28, 16 # 58750 # 121

Page concordance

Text layer

Text normalization

Search

Scan	Original
61	47
62	48
63	49
64	50
65	51
66	52
67	53
68	54
69	55
70	56
71	57
72	58
73	59
74	60
75
76	62
77	63
78	64
79	65
80	66
81	67
82	68
83	69
84	70
85	71
86	72
87	73
88	74
89	75
90	76

Scan	Original
61	47
62	48
63	49
64	50
65	51
66	52
67	53
68	54
69	55
70	56
71	57
72	58
73	59
74	60
75
76	62
77	63
78	64
79	65
80	66
81	67
82	68
83	69
84	70
85	71
86	72
87	73
88	74
89	75
90	76

Scan	Original
61	47
62	48
63	49
64	50
65	51
66	52
67	53
68	54
69	55
70	56
71	57
72	58
73	59
74	60
75
76	62
77	63
78	64
79	65
80	66
81	67
82	68
83	69
84	70
85	71
86	72
87	73
88	74
89	75
90	76