This paper deals with the measurement of AC corona inception voltage, Vincp, at the tip of a rod electrode using a hemispherically-capped rod-plane electrode configuration for various rod radii with a short air gap. Effects of atmospheric pressure and temperature variation on Vincp are investigated experimentally. An empirical equation for the field form factors of the hemispherically cappe...

The lack of sidewalls in a spillway leads to lateral expansion the flow and, consequently, non-uniform transversal rate distribution along chute. present work shows velocity field measured physical model 1 V:0.8 H steeply sloping stepped without sidewalls. An application Bubble Image Velocimetry (BIV) technique self-aerated region is shown, using air bubbles entrained into downstream inception ...

We describe a new concept for making photo tampering more difficult and time consuming, and for a given amount of time and effort, more amenable to detection. We record the camera preview and camera motion in the moments just prior to image capture. This information is packaged along with the full resolution image. To avoid detection, any subsequent manipulation of the image would have to be pr...