## Proceedings of the American Academy of Arts and Sciences, Volumen7Vol. 12 (from May 1876 to May 1877) includes: Researches in telephony / by A. Graham Bell. |

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Página 2

The following formulæ are especially designed to facilitate interpolations where a

number of them are to be made at

given or computed for

...

The following formulæ are especially designed to facilitate interpolations where a

number of them are to be made at

**equal**intervals between values of a functiongiven or computed for

**equal**intervals of the variable : – Let F , be any function of...

Página 3

... B , & c . are so determined as to make the two preceding expressions of F ,

correspond for the four values of x = F w , and x = F £w ; so that , corresponding at

is ...

... B , & c . are so determined as to make the two preceding expressions of F ,

correspond for the four values of x = F w , and x = F £w ; so that , corresponding at

**equal**intervals of tw , they cannot differ much for any intermediate value of x , asis ...

Página 5

This formula is applicable in all cases in which the number of interpolations does

not exceed twelve . If we wish to interpolate to twelfths , w in the expression of the

preceding constants A , B , C , & c . must be put

This formula is applicable in all cases in which the number of interpolations does

not exceed twelve . If we wish to interpolate to twelfths , w in the expression of the

preceding constants A , B , C , & c . must be put

**equal**to 12 ; if to tenths ,**equal**... Página 32

The effect of the astronomical term is

the latitude of the port , and l is the sun ' s longitude . The effect of the variation of

atmospheric pressure is

The effect of the astronomical term is

**equal**to a cos 2 l , in which a is a function ofthe latitude of the port , and l is the sun ' s longitude . The effect of the variation of

atmospheric pressure is

**equal**to 130 . 568 ( P - p ) , in which p is the observed ... Página 43

Utm : V + mH ' Y = product is

, m v ) , which are satisfied in from 0 to 4 ways , just as three conics have from 0 to

4 common intersections . 1 of these double contacts may be replaced by 1 ...

Utm : V + mH ' Y = product is

**equivalent**to three quadric conditions among ( 1 , m, m v ) , which are satisfied in from 0 to 4 ways , just as three conics have from 0 to

4 common intersections . 1 of these double contacts may be replaced by 1 ...

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