The Lift Trick

Next time I add to the BLOG I will tell you about a trick you can play with lifts. I haven't yet had the opportunity to try it myself yet. So I will try to ratify it before I publish it. Meantime it's a waiting game... and a G-Force!
OK even though I have not had an opportunity to test it I will publish and be damned. 

If you want to send the lift directly to your floor without it stopping for other requests. Hold down the DOOR CLOSED button, while you push button for your choice of floor. Hold both in until lift starts. {Police & Firefighters trick}. You can also cancel calls by pushing the button twice.

SOMETHING ENTIRELY NEW

To me that is. Will I ever stop learning? This little gem appeared in the paper today. I have just tried it out and it works! Drop a battery (AA is what I used) on to a hard surface, (my PC desk), from a couple of inches. A fresh Alkaline type will land with a thud and scarcely bounce. However, a run down battery will jump up and down several times. On test there's a voltage difference too. Only 1.36V for a low battery and over 1.6V for a fresh one. {Both measured off load}. This is a splendid trick for someone without a meter.
The reason? There's a soft gel inside a fresh battery that absorbs the bounce. This gel turns solid with use and the kinetic energy is not then absorbed. Thus the little jumps on a hard surface.