### What does **f number** mean?

## Definitions for **f number**

#### Here are all the possible meanings and translations of the word **f number**.

### Princeton's WordNet

focal ratio, f number, stop number, speed(noun)

the ratio of the focal length to the diameter of a (camera) lens system

### Freebase

F number

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.

### Numerology

Chaldean Numerology

The numerical value of f number in Chaldean Numerology is:

**5**Pythagorean Numerology

The numerical value of f number in Pythagorean Numerology is:

**7**

### Sample Sentences & Example Usage

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.

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.

### Images & Illustrations of f number

# Translation

#### Find a translation for the **f number** definition in other languages:

Select another language:

#### Discuss these f number definitions with the community:

# Word of the Day

#### Would you like us to send you a **FREE** new word definition delivered to your inbox daily?

# Citation

## Use the citation below to add this definition to your bibliography:

"f number." *Definitions.net.* STANDS4 LLC, 2017. Web. 28 Jul 2017. <http://www.definitions.net/definition/f number>.