subduplicate การใช้

• He had discovered a contraction in the vein of fluid ( " vena contracta " ) which issued from the orifice, and found that, at the distance of about a diameter of the aperture, the section of the vein was contracted in the subduplicate ratio of two to one.
• A short further correspondence developed, and towards the end of it Hooke, writing on 6 January 1680 to Newton, communicated his " supposition . . . that the Attraction always is in a duplicate proportion to the Distance from the Center Reciprocall, and Consequently that the Velocity will be in a subduplicate proportion to the Attraction and Consequently as Kepler Supposes Reciprocall to the Distance . " ( Hooke's inference about the velocity was actually incorrect .)
• A short further correspondence developed, and towards the end of it Hooke, writing on 6 January 1679 | 80 to Newton, communicated his " supposition . . . that the Attraction always is in a duplicate proportion to the Distance from the Center Reciprocall, and Consequently that the Velocity will be in a subduplicate proportion to the Attraction and Consequently as Kepler Supposes Reciprocall to the Distance . " ( Hooke's inference about the velocity was actually incorrect)
• On the latter two aspects, Hooke himself stated in 1674 : " Now what these several degrees [ of attraction ] are I have not yet experimentally verified "; and as to his whole proposal : " This I only hint at present ", " having my self many other things in hand which I would first compleat, and therefore cannot so well attend it " ( i . e . " prosecuting this Inquiry " ) . to Newton, that Hooke communicated his " supposition . . . that the Attraction always is in a duplicate proportion to the Distance from the Center Reciprocall, and Consequently that the Velocity will be in a subduplicate proportion to the Attraction and Consequently as Kepler Supposes Reciprocall to the Distance . " ( The inference about the velocity was incorrect .)