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2. List of junior world records in swimming - Wikipedia

   en.wikipedia.org/wiki/List_of_junior_world...

   FINA World Junior Records in 25m pool are recognised starting on January 1, 2015. Records are recognized for long course (50 m pool) and short course (25 m pool) in the following events: relays: 4×50 free (short course only), 4×100 free, 4×200 free, 4×50 medley (short course only) and 4×100 medley. Also recognized are mixed relay records ...

3. List of United States high school national records in track ...

   en.wikipedia.org/wiki/List_of_United_States_high...

   The list of United States high-school national records in track and field is separated by indoor and outdoor and boys and girls who have set a national record in their respective events. While these records have been compiled for over 100 years, there are varying standards for these records. The National Federation of State High School ...

4. 2-meter band - Wikipedia

   en.wikipedia.org/wiki/2-meter_band

   The 2-meter amateur radio band is a portion of the VHF radio spectrum that comprises frequencies stretching from 144 MHz to 148 MHz [ 1] in International Telecommunication Union region (ITU) Regions 2 (North and South America plus Hawaii) and 3 (Asia and Oceania) [ 2] [ 3] and from 144 MHz to 146 MHz in ITU Region 1 (Europe, Africa, and Russia).

5. Metre - Wikipedia

   en.wikipedia.org/wiki/Metre

   The metre (or meter in US spelling; symbol: m) is the base unit of length in the International System of Units (SI). Since 2019, the metre has been defined as the length of the path travelled by light in vacuum during a time interval of ⁠ 1 299 792 458⁠ of a second, where the second is defined by a hyperfine transition frequency of caesium.

6. Metre (music) - Wikipedia

   en.wikipedia.org/wiki/Metre_(music)

   Contents. Metre (music) In music, metre (British spelling) or meter (American spelling) refers to regularly recurring patterns and accents such as bars and beats. Unlike rhythm, metric onsets are not necessarily sounded, but are nevertheless implied by the performer (or performers) and expected by the listener. [not verified in body]

7. Multimeter - Wikipedia

   en.wikipedia.org/wiki/Multimeter

   A multimeter (also known as a volt-ohm-milliammeter, volt-ohmmeter or VOM) [ 1] is a measuring instrument that can measure multiple electrical properties. [ 2][ 3] A typical multimeter can measure voltage, resistance, and current, [ 4] in which case can be used as a voltmeter, ohmmeter, and ammeter. Some feature the measurement of additional ...

8. World record progression 1500 metres freestyle - Wikipedia

   en.wikipedia.org/wiki/World_record_progression...

   The first world record in the men's 1500 metres freestyle in a long course (50 metres) swimming pool was recognised by the International Swimming Federation (FINA) in 1908. [ 1] In short course (25 metres) pools, the world's governing body recognizes world records since March 3, 1991.

9. Square metre - Wikipedia

   en.wikipedia.org/wiki/Square_metre

   Square metre. The square metre ( international spelling as used by the International Bureau of Weights and Measures) or square meter ( American spelling) is the unit of area in the International System of Units (SI) with symbol m2. [ 1] It is the area of a square with sides one metre in length. Adding and subtracting SI prefixes creates ...