This was not confirmed experimentally until the development of the laser in the 1960s.

This unusual value for the rubber phase was later confirmed experimentally.

This effect has been confirmed experimentally, as described below.

This effect is minute, but it too has been confirmed experimentally in multiple experiments, as described below.

Although, vertical transmission is suspected this has not been experimentally confirmed.

This pattern has not yet been experimentally confirmed for the bocaviruses but seems likely to be the case.

It is also a tiny effect that is difficult to confirm experimentally.

Still, it's never been confirmed experimentally that antimatter "falls down."

In the case of glass this crack speed is 4,000 miles an hour or 1,700 m/s, a velocity which has been confirmed experimentally.

There are several predicted phosphorylation sites but none have been experimentally confirmed.