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

Symbol

Coefficient 係数

Terahertz

terahertz

THz

1e12

Gigahertz

gigahertz

GHz

1e9

Megahertz

megahertz

MHz

1000000.0

Kilohertz

kilohertz

kHz

1000.0

Hertz ヘルツ

hertz

Hz

1

Millihertz

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。