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Removing Photos from iPhoto

Despite iPhoto's long history, many people continue to be confused about exactly what happens when you delete a photo. There are three possibilities.

If you delete a photo from an album, book, card, calendar, or saved slideshow, the photo is merely removed from that item and remains generally available in your iPhoto library.

If, however, you delete a photo while in Events or Photos view, that act moves the photo to iPhoto's Trash. It's still available, but...

If you then empty iPhoto's Trash, all photos in it will be deleted from the iPhoto library and from your hard disk.

Visit iPhoto '08: Visual QuickStart Guide

 
 

Mathematical Art from a Mac

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The cover of the journal Science for 22-Sep-06 features a beautiful artwork titled "Still Life: Five Glass Surfaces on a Tabletop" by graphic artist Luc Benard and mathematician Richard Palais, but the image is neither a photograph nor a Photoshop illustration. Instead, the five objects pictured are famous mathematical surfaces produced by the free Macintosh program 3D-XplorMath. The objects were then exported into Bryce, a 3D-rendering program, where Luc Benard gave them a glassy texture and placed them on a virtual glass-covered wooden tabletop.

The image is the first-place winner in the illustration category of the 2006 Science and Engineering Visualization Challenge, jointly sponsored by Science and the National Science Foundation.

Richard Palais, a well-known professor of mathematics at the University of California, Irvine, has worked on the mathematical visualization program 3D-XplorMath (previously known as 3D-Filmstrip) since 1997. Users can view a gallery of interesting mathematical objects in it, plus modify various parameters and viewing options for further experimentation. 3D-XplorMath runs in Mac OS 9 and Mac OS X as a Carbon application and is a free 12.3 MB download.

 

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