Thanks UTMike! Glad you liked it.

You are right Marty: it certainly is!

That depends on which way you look at it!

Thanks for your kind comment deer2ker! I'll try some more again soon.

Thanks NikonJohn! Do give yours a try and show us the results; it helps to have an assistant on hand, but you can get by without.

Thanks NMGal! It's a bit of a niche style, but fun to play with now and then.

Thanks for looking and commenting Bob!

Thanks tracs101! I hope you have fun with it. It takes a bit of trial and error. Finding something to put it on (to avoid scratching) is important, then just go for it! There are lots of examples of the kinds of things that work available on the net. I look forward to seeing some of your results.

Lovely!

A couple of shots playing around with a glass ball.

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Up to 45-50 mins. is fine. Beyond that, concentration flags. Leave the audience wanting more, not wishing you had stopped earlier. Have a pointer - laser dot, or just a simple stick. And practice using the ability of your programme (Powerpoint or any other) to draw on a frame to illustrate your point, underline features etc; this is very handy if done smoothly, but a pain if you get in a tangle. The number of slides is very variable, depending on how much you have to say about each one. If you are reading from notes, make sure there is a lamp to see them with in a darkened room. If you are using your own computer hooked up to a projector, make sure ahead of time that the two are compatible and you know how to connect them; it's usually a simple operation, but if you don't know which keys to press or if they have to be booted in order, you don't want the audience to suffer through you sorting it out. Proper preparation will make even dummies look like pros.

Magnificent shots Thomas! The right gear in the right place at the right time: and you knew how to make the most of it.

A thick sock.

Great set: thanks for posting.

Lovely shot!