William Webster Lammers

Feminist litigation: an oxymoron? -- a study of the briefs filed in William L. Webster v. Reproductive Health Services.

Webster, privacy, and RU486.

The Richard Webster Medal

There have recently been moves afoot among evolutionary biologists to stop speaking of ‘Darwin’s theory of evolution’ and, instead, to call it ‘Darwin’s law of evolution’. This is to stymie creationists who like to say ‘evolution is only a theory’. Now I am all in favour of stymieing creationists, but I think that this idea is misguided. The underlying assumption is that the use of the word ‘La...

Robert J . Webster III

As a flexible needle with a bevel tip is pushed through soft tissue, the asymmetry of the tip causes the needle to bend. We propose that, by using nonholonomic kinematics, control, and path planning, an appropriately designed needle can be steered through tissue to reach a specified 3D target. Such steering capability could enhance targeting accuracy and may improve outcomes for percutaneous th...

The Webster Equation Revisited1

The problem of low-frequency sound propagation in slowly varying ducts is systematically analysed as a perturbation problem of slow variation. The Webster equation and some variants are derived, and the entrance/exit plane boundary layer is given. It is shown why a varying lined duct in general does not have a solution.