focal ratio, f number, stop number, speed(noun)
the ratio of the focal length to the diameter of a (camera) lens system
F number is a number used in the chemistry of polycyclic aromatic hydrocarbons as a descriptor of their molecular size. It was proposed by R.J. Hurtubise et al in 1977.
The numerical value of f number in Chaldean Numerology is: 5
The numerical value of f number in Pythagorean Numerology is: 7
Sample Sentences & Example Usage
There are worse things than getting a call for the wrong number at 4 AM. It could be the right number.
There's a number that's enough and there's a number that's not enough, the $20 million number is enough.
Politics is about the control of a limited number of resources by a limited number of people who think that number is too many
Number one: we want Lidl to get stronger in existing markets. Number two: we will expand to new countries. Number three: we will fundamentally overhaul Kaufland.
I am not judged by the number of times I fail, but by the number of times I succeed and the number of times I succeed is in direct proportion to the number of times I can fail and keep on trying.
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