Class

UnitFrequency

A unit of measure for frequency. 周波数に対する計測の単位。

Declaration 宣言 

class UnitFrequency : Dimension

Overview 概要

You typically use instances of NSUnitFrequency to represent specific quantities of frequency using the NSMeasurement class. あなたは概してNSUnitFrequencyのインスタンスを使用して、NSMeasurementクラスを使っている周波数の具体的な量を表します。

Frequency 周波数

Frequency is a quantity of occurrences for a repeating event over time. 周波数は、時間とともに繰り返す出来事に対する発生の量です。 The SI unit for frequency is the hertz (Hz), which is a derived as one occurrence per second (1 Hz = 1 / 1s).

The UnitFrequency class defines its base unit as hertz, and provides the following units, which are initialized using UnitConverterLinear converters with the specified coefficients:

Name 名前

Method メソッド

Symbol 記号

Coefficient 係数

Terahertz テラヘルツ

terahertz

THz

1e12

Gigahertz ギガヘルツ

gigahertz

GHz

1e9

Megahertz メガヘルツ

megahertz

MHz

1000000.0

Kilohertz

kilohertz

kHz

1000.0

Hertz ヘルツ

hertz

Hz

1

Millihertz ミリヘルツ

millihertz

mHz

0.001

Microhertz

microhertz

µHz

0.000001

Nanohertz

nanohertz

nHz

1e-9

Topics 話題

Accessing Predefined Units あらかじめ定義された単位にアクセスする

class var terahertz: UnitFrequency
The terahertz unit of frequency.
class var gigahertz: UnitFrequency
The gigahertz unit of frequency.
class var megahertz: UnitFrequency
The megahertz unit of frequency.
class var kilohertz: UnitFrequency
The kilohertz unit of frequency.
class var hertz: UnitFrequency
The hertz unit of frequency.
class var millihertz: UnitFrequency
The millihertz unit of frequency.
class var microhertz: UnitFrequency
The microhertz unit of frequency.
class var nanohertz: UnitFrequency
The nanohertz unit of frequency.
class var framesPerSecond: UnitFrequency
The frames per second unit of frequency.

Relationships 関係

Inherits From 継承元

Conforms To 次に準拠

See Also 参照

Time and Motion 時間と運動

class UnitAcceleration
A unit of measure for acceleration. 加速度に対する計測の単位。
class UnitDuration
A unit of measure for a duration of time.
class UnitSpeed
A unit of measure for speed. スピードに対する計測の単位。