ᱴᱤᱯᱤᱡ

ᱴᱤᱯᱤᱡ (ᱤᱝᱞᱤᱥ: Second), (ᱪᱤᱱᱦᱟᱹ : s,ᱠᱷᱟᱴᱚ ᱛᱮ: sec) ᱫᱚ ᱡᱮᱡᱟᱹᱛᱤᱭᱟᱹᱨᱤ ᱮᱠᱚᱠ ᱯᱟᱱᱛᱷᱟ (SI) ᱨᱮ ᱚᱠᱛᱚ ᱨᱮᱭᱟᱜ ᱢᱩᱬᱩᱛ ᱮᱠᱚᱠ ᱠᱟᱱᱟ ᱾ ᱥᱟᱫᱷᱟᱬᱚᱱ ᱟᱨ ᱱᱟᱜᱟᱢᱟᱱᱟᱜ ᱢᱮᱱᱮᱛ ᱞᱮᱠᱟᱛᱮ ᱢᱤᱫ ᱢᱟᱦᱟᱸ ᱨᱮᱱᱟᱜ  ᱦᱟᱹᱴᱤᱧ – ᱯᱳᱭᱞᱳ ᱨᱮ ᱢᱟᱦᱟᱸ ᱫᱚ ᱒᱔ ᱴᱟᱲᱟᱝ ᱨᱮ, ᱚᱱᱟ ᱛᱟᱭᱚᱢ ᱖᱐ ᱴᱤᱲᱤᱡ ᱨᱮ ᱟᱨ ᱢᱩᱪᱟᱹᱫ ᱨᱮ ᱖᱐ ᱴᱤᱯᱤᱡ ᱨᱮ ᱦᱟᱴᱟᱬ ᱠᱟᱛᱮ ᱱᱚᱶᱟ ᱡᱩᱲᱩ (factor) ᱧᱟᱢᱚᱜᱼᱟ ᱾

ᱜᱷᱩᱲᱤ ᱟᱨ ᱥᱤᱧᱪᱟᱸᱫᱚ ᱚᱠᱛᱚ

ᱟᱨᱦᱚᱸ ᱧᱮᱞ ᱢᱮ
ᱴᱟᱲᱟᱝ
ᱴᱤᱲᱤᱡ

ᱵᱟᱨᱦᱮ ᱡᱚᱱᱚᱲ

 National Physical Laboratory: Trapped ion optical frequency standards 
 High-accuracy strontium ion optical clock; National Physical Laboratory (2005)
 National Research Council of Canada: Optical frequency standard based on a single trapped ion
 NIST: Definition of the second; notice the cesium atom must be in its ground state at 0 K
 Official BIPM definition of the second
 The leap second: its history and possible future
 What is a Cesium atom clock?
 Accuracy of the time — Astronoo

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