No weighable quantity of the element has been prepared or isolated.

This made the carrying-forward of material or weighable substance difficult to prevent.

Research is limited by its short half-life, which prevents the creation of weighable quantities.

At least all of them were weighable.

Californium is one of the highest atomic mass elements to have been produced in weighable amounts.

Good clay was valuable, and a careful accounting was made of every weighable scrap of it.

Porcelain crucibles are hygroscopic, i. e. they absorb a bit of weighable moisture from the air.

Capabilities are thought of in tangible terms-they are measurable, weighable, quantifiable assets.

For completely accurate results, the crucible is handled with clean tongs because fingerprints can add weighable mass to the crucible.

It has no counterpart in classical Newtonian physics, in which radiation, light, heat, and kinetic energy never exhibit weighable mass under any circumstances.

The salt is sometimes used as a reagent used in organic synthesis as a conveniently weighable, solid source of bromine.

In August 1942, Seaborg's team chemically isolated the first weighable amount of plutonium from uranium irradiated in cyclotrons.

Typical tests involve titrations with weighable, anhydrous protic reagents, e.g. menthol in the presence of a color-indicator.

The property that trapped energy in any form adds weighable mass to systems that have no net momentum is one of the characteristic and notable consequences of relativity.

It couldn't always be detected immediately -- perhaps it wasn't always weighable; but the departing ones who took something with them did seem always to leave a new and compensating thing in its place.

This irradiation method was and still is the only way of producing weighable amounts of the element, and most solid-state studies of berkelium have been conducted on microgram or submicrogram-sized samples.

The molar mass is a measure of the average molecular mass of all the molecules in a sample, and is usually the more appropriate measure when dealing with macroscopic (weighable) quantities of a substance.

Weighable quantities of californium were first produced by the irradiation of plutonium targets at the Materials Testing Reactor at the Idaho National Laboratory; and these findings were reported in 1954.

Most of the nine women seated at a back table in the Delancey Street Cafe in Mineola weighed more than "the weighable 350 pounds" - the highest weight a doctor's scale registers - but no one was dieting and no one had any plans to.

Physicist Glenn Seaborg said of this event: "These memorable days will go down in scientific history to mark the first sight of a synthetic element, and the first isolation of a weighable amount of an artificially produced isotope of any element."

More recently, a combination of radiochemical methods and nuclear physics has been used to try to make new 'superheavy' elements; it is thought that islands of relative stability exist where the nuclides have half-lives of years, thus enabling weighable amounts of the new elements to be isolated.