I’m forever blowing bubbles…

Blowing Bubbles: Dermoscopy of Bubble Hair

Exposing wet hair to high temperatures can create gas bubbles within the hair shaft, leading to brittle, dry hairs in a disorder known as bubble hair abnormality. We present a case of a 61-year-old woman who presented for hair breakage over her crown. She regularly dried her damp hair with a blow dryer. Dermoscopy revealed multiple bubbles within the hair shaft, and diagnosis of bubble hair abn...

Blowing soap bubbles: teaching pursed-lip breathing.

Jellyfish Party: Blowing Soap Bubbles in Mixed Reality Space

This paper describes a Mixed Reality installation named Jellyfish Party, for enjoying playing with soap bubbles. A special feature of this installation is the use of a spirometer sensor to measure the amount and speed of expelled air used to blow virtual soap bubbles.

Generating Soap Bubbles by Blowing on Soap Films.

Making soap bubbles by blowing air on a soap film is an enjoyable activity, yet a poorly understood phenomenon. Working either with circular bubble wands or long-lived vertical soap films having an adjustable steady state thickness, we investigate the formation of such bubbles when a gas is blown through a nozzle onto a film. We vary film size, nozzle radius, space between the film and nozzle, ...

On the (im)possibility of warp bubbles

I discuss the objections raised by several authors against Alcubierre’s warp drive geometry. I argue that all of these objections may, in principle, be overcome, although important practical difficulties remain. † [email protected]