Although Jonathan was 45 years old when David killed Goliath, it was probably this youthful valiancy of faith that formed the bond of love the friendship between David and Jonathan. c. In 1052 BC, Samuel was 52 years old when he anointed Saul at age 30 year old as king. 1 Sam 13:1. i.
If you're concerned about why zero Kelvin is the lowest possible temperature (a.k.a. absolute zero), it's simply because scientists have decided to make the Kelvin scale an absolute temperature scale - that means the lowest possible temperature, by definition, is zero Kelvin.
Kelvin, First Baron. Title of William Thomson 1824-1907. British mathematician and physicist known especially for his work on heat and electricity. In 1848 he proposed a scale of temperature independent of any physical substance, which became known as the Kelvin scale.