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Find Hercules between 2 bright stars

Tonight, try locating one of the coolest constellations up there. The constellation Hercules the Kneeling Giant can be seen ascending in the …

Astronomy

April guide to the bright planets

April finds Venus blazing away in the west at evening twilight, and Jupiter rising at mid-to-late evening. After the Mars and Saturn conjunction on …

Astronomy

Got 5 minutes? Learn to see Saturn

June, July and August are especially good months for viewing Saturn in 2017. But you can find Saturn in May, 2017, too, especially when the moon …

Starwatch: The May night sky

The conspicuous planet Jupiter is dropping lower into our W sky at nightfall and is all but lost from view by May's end. Before then, though, it …

Home networking explained, part 6: Keep your network secure

CNET editor Dong Ngo offers a few (OK, five or six) simple tips on keeping your home network secure.<p><b>Editors' note:</b> This post is part of an ongoing series. For the other parts, check out the related stories section.<p>If you were concerned after reading CNET's recent report that most home routers can …

Wi-Fi

Eigenfaces, for Facial Recognition

<i>This post assumes familiarity with the terminology and notation of linear algebra, particularly inner product spaces. Fortunately, we have both a</i> …

Math ∩ Programming

Tai-Danae Bradley is one of the hosts of PBS Infinite Series, a delightful series of vignettes into fun parts of math. The video below is about the …

Mathematics

Inner Product Spaces – A Primer

<i>This primer is a precursor to a post on eigenfaces, a technique for facial recognition. For a more basic introduction to linear algebra, see our</i> …

Linear Algebra – A Primer

Story Time<p>Linear algebra was founded around the same time as Calculus (think Leibniz, circa 1700) solely for the purpose of solving general systems …