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Medicine

Submission + - Sticky Tape Found To Emit Terahertz Radiation (newscientist.com)

An anonymous reader writes:

WILL sticky tape ever cease to amaze? Peeling it can generate terahertz radiation, raising the possibility of a cheaper alternative to lasers for medical imaging. Peeling sticky tape has already been shown to produce X-rays, so Joseph Horvat and Roger Lewis of the University of Wollongong in New South Wales, Australia, tried to see if it could create lower-frequency terahertz radiation. "We were rather pleasantly surprised to obtain a clear signal in our first attempt," says Horvat. Strongly adhesive Scotch Magic 810 tape and weakly adhesive electrical tape both yielded strong terahertz signals, ranging from 0.1 to 10 terahertz, but only about a microwatt of power, too little for practical use (Optics Letters, vol 34, p 2195). Horvat says that refinements should increase the power by orders of magnitude.

It may be old news to /. that it had been proved to produce xrays but watching the linked video where they use tape to expose X-ray film was pretty amazing. Wonder what would happen if they used Duct tape

Censorship

Craigslist Fights Back, Sues SC Atty General 286

FredMastro writes "Craigslist has now stepped past just asking for an apology. The Wall Street Journal and CNet report that Craigslist is fighting back. 'Craigslist said it has sued South Carolina Attorney General Henry McMaster, in the latest escalation of a battle over adult-oriented ads on the company's site. Jim Buckmaster, Craigslist's chief executive, said in a blog post that the company filed its suit in federal court in South Carolina. ...'" Unfortunately, the WSJ's piece requires a subscription, but reader Locke2005 adds a link to coverage in the San Jose Business Journal.

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