Sentence examples for lead dates from inspiring English sources

The earliest known use of lead dates from about 3000 bc in Egypt and Asia Minor, when it was used in making small statuettes and votive figures.

The Baghdad Battery, with copper cylinders soldered to lead, dates back to 248 BC to AD 226 and resembles a galvanic cell, leading people to believe this was the first battery; the claim has not been verified.

Coltrane had led dates on several labels; recorded the influential "Giant Steps," in 1959; and was ready to go out on his own.

Uranium-lead dating of zircon using this method was pioneered by William Compston at the Australian National University.

This process continues until it gets to lead-206, which is stable (see uranium-thorium-lead dating).

In uranium-lead dating, minerals virtually free of initial lead can be isolated and corrections made for the trivial amounts present.

Shelby's report mentions that the F.B.I.'s counterterrorism division has sixty-eight thousand outstanding and unassigned leads dating back to 1995.

The researchers, supported by the National Science Foundation, used an improved uranium-lead dating technique that yields ages of minerals back tens to hundreds of million years.

These zircon crystals are tiny — just a tenth of a millimeter long — but they are the key to uranium-lead dating.

Uranium-thorium-lead dating, also called Common-lead Dating, method of establishing the time of origin of a rock by means of the amount of common lead it contains; common lead is any lead from a rock or mineral that contains a large amount of lead and a small amount of the radioactive progenitors of lead i.e., the uranium isotopes uranium-235 and uranium-238 and the thorium isotope thorium-232.

This was done using a uranium-lead dating technique, as well as a process called paleomagnetic dating, which determines the age of a rock by comparing the magnetic orientation of its iron with that of surrounding rocks.