安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
|
- AM and PM: What Do They Mean? - timeanddate. com
AM means before noon This is the 12-hour period from midnight to noon PM means after noon It covers the 12 hours from noon to midnight Using numbers from 1 to 12, followed by am or pm, the 12-hour clock system identifies all 24 hours of the day
- 12-hour clock | Description, History, and Facts | Britannica
The first is referred to as am, which stands for ante meridiem, “before midday” in Latin, while the second is referred to using pm, meaning post meridiem, or “after midday ” This nomenclature is based on the position of the Sun in relation to the meridian
- What do AM and PM mean? - World Time Clock Map
In particular, AM stands for ante meridiem, which translates into English as ‘before midday’ Meanwhile, PM is post meridiem and means in English ‘after midday’ These abbreviations are used to identify the time in the 12-hour clock format instead of using 24 hours
- AM and PM - Meaning, Full Form of AM PM | Relation with 24-Hour clock
AM and PM are the abbreviated terms for Ante Meridiem and Post Meridiem respectively While AM represents the time from midnight to 11:59 noon, and PM represents the time from 12 noon to 11:59 midnight
- Why We Say a. m. and p. m. and What They Actually Mean
Turns out, the answer goes back to ancient Rome and the way they watched the sky Quick insight: a m means “ante meridiem” or “before midday ” p m means “post meridiem” or “after midday ” Both come from Latin and track the sun’s position What a m and p m Actually Stand For
- AM broadcasting - Wikipedia
AM broadcasting is radio broadcasting using amplitude modulation (AM) transmissions It was the first method developed for making audio radio transmissions, and is still used worldwide, primarily for medium wave (also known as "AM band") transmissions, but also on the longwave and shortwave radio bands
- AM Radio Stations
There are 4,346 AM radio stations in America, broadcasting between the frequency range of 540 kHz to 1700 kHz within the medium wave broadcast band using Amplitude Modulation
- am, pm or a. m. , p. m. | Online English Usage Dictionary
Separate the abbreviations from their number with a non-breaking space The abbreviations stand for ante meridiem (before noon) and post meridiem (after noon) and are used strictly with twelve-hour time
|
|
|