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 Not so elementary, my dear Watson

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Joy
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PostSubject: Not so elementary, my dear Watson   Thu May 19, 2011 9:29 am

Link: Static charge provides clue to age of fingerprints

Quote :
JUSTICE will be done more often: a new method of fingerprint analysis could not only detect prints but also reveal when they were made.

Techniques for capturing a fingerprint are far from perfect. Besides the well-known method of dusting, there are several more sophisticated ways of detecting fingerprints, but all have limitations. Software analysis and chemical agents can often enhance a fingerprint, but can sometimes muddle the pattern instead. And while atomic force microscopy can pick up fingerprint residues precisely, the technique scans such a small area at a time that it can often take hours to assemble a single print.

Now Robert Prance and colleagues at the University of Sussex in Brighton, UK, have developed a way to capture fingerprints by looking at the small amount of static charge left behind when a finger makes contact with an insulating surface such as plastic or glass.

The team passed an electrode over two fingerprints on a piece of plastic and measured the change in voltage as it passed over the surface. Within 75 minutes, the technique had revealed the prints with "comparable quality to conventional fingerprint images", says Prance.

By performing the same measurement each day for 14 days, the team was also able to show how the charge decayed over time (Forensic Science International, DOI: 10.1016/j.forsciint.2011.02.024).

While the method still needs to be tested on different surfaces and under various conditions, Prance says it could be used to work out when a fingerprint was made.

The technique could therefore provide clues as to when a crime was committed, or exclude people from an investigation if their fingerprints were made before or after the crime is known to have taken place. "This is a significant advantage over more conventional fingerprint enhancement methods," says Glenn Porter, a forensic scientist at the University of Western Sydney, Australia.

From a lover of mysteries and someone fascinated with forensics - super cool! Very Happy
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PostSubject: Re: Not so elementary, my dear Watson   Thu May 19, 2011 11:51 am

It's so good to be here. cheers
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Joy
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PostSubject: Re: Not so elementary, my dear Watson   Thu May 19, 2011 12:08 pm

Thanks, Buff...glad you are here! Smile
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PostSubject: Re: Not so elementary, my dear Watson   Thu May 19, 2011 12:11 pm

Your avatar, is that you?
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Joy
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PostSubject: Re: Not so elementary, my dear Watson   Thu May 19, 2011 12:19 pm

No...that is from one of my favorite scenes in Lord of the Rings. It's where Arwen (played by Liv Tyler) is protecting Frodo and faces the Black Riders...very cool. I'll see if I can find a clip.
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Joy
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PostSubject: Re: Not so elementary, my dear Watson   Thu May 19, 2011 12:28 pm

Here it is...it won't allow embed, but here is the link...

http://youtu.be/VlEhEw52kBg

LOVE this scene! Smile
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PostSubject: Re: Not so elementary, my dear Watson   Thu May 19, 2011 12:44 pm

I'VE heard of the movie. That was scary.
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Joy
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PostSubject: Re: Not so elementary, my dear Watson   Thu May 19, 2011 12:52 pm

Please tell me you have seen these movies, Buff! They are a must see. They spent a fortune making them and LOTR is one of the best stories ever written. I promise you will not be disappointed. Must see, must see, must see...did I say it was a must see? Very Happy
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PostSubject: Re: Not so elementary, my dear Watson   Thu May 19, 2011 1:22 pm

Joy wrote:
Please tell me you have seen these movies, Buff! They are a must see. They spent a fortune making them and LOTR is one of the best stories ever written. I promise you will not be disappointed. Must see, must see, must see...did I say it was a must see? Very Happy

I'm not much of a movie buff. affraid
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Joy
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PostSubject: Re: Not so elementary, my dear Watson   Thu May 19, 2011 1:31 pm

I think I heard a *rim shot*. Very Happy

Must see!...just saying.

geek
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PostSubject: Re: Not so elementary, my dear Watson   Thu May 19, 2011 2:08 pm

good to be here. That was a quick reply to my pm joy. you are on the ball Very Happy
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Joy
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PostSubject: Re: Not so elementary, my dear Watson   Thu May 19, 2011 2:12 pm

Thankee kindly...I do try. Smile
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PostSubject: Re: Not so elementary, my dear Watson   Thu May 19, 2011 2:18 pm

You've done a great job here. Turn around so I can pat you on the back. cheers
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PostSubject: Re: Not so elementary, my dear Watson   Thu May 19, 2011 2:54 pm

Knowing my daddy as I do.........I don't think it's your back he wants to pat......just sayin

Twisted Evil

Speaking of......have I broke enough rules to get that spanking yet?????????????

Razz Razz Razz Razz Razz Razz Razz Razz Razz
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PostSubject: Re: Not so elementary, my dear Watson   Thu May 19, 2011 3:12 pm

Anybody want some Sweetwater? Come on.
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Joy
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PostSubject: Re: Not so elementary, my dear Watson   Thu May 19, 2011 4:06 pm

Well, now, you boys are in luck. I just hired somebody to handle all the spankings.

Here's a picture...






ENJOY!

Not all at once!

Single file!

Wait your turn! Razz
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PostSubject: Re: Not so elementary, my dear Watson   Thu May 19, 2011 4:12 pm

Dear Joy,

It has just come to my attention that the emots are missing a "stomps foot" or "kiss my butt" emot. Please work on that!

Your Pal
Ubu


scratch

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Joy
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PostSubject: Re: Not so elementary, my dear Watson   Thu May 19, 2011 4:23 pm

*snicker*

Okay, this Mama Bear must go to the grocery store before Papa Bear gets home. I was supposed to be sick in the bed all day, but I've been playing forum instead. Very Happy

Y'all behave! I love you
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The Nagel
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PostSubject: Re: Not so elementary, my dear Watson   Thu May 19, 2011 5:03 pm

Joy wrote:
Please tell me you have seen these movies, Buff! They are a must see. They spent a fortune making them and LOTR is one of the best stories ever written. I promise you will not be disappointed. Must see, must see, must see...did I say it was a must see? Very Happy

i KNEW there was a reason i liked you.

i grew up with those books as my best friend. i'd start with the silmarillion, then the hobbit, then the lord of the rings, over and over. i probably read them 3 dozen times.

except for a couple of little things in the 2nd movie, i'm very pleased with peter jacksons version. the only problems i had was the weird aragorn almost dying and fallign in the river thing, and the additude that Rohirrim had when they went to Helm's Deep. in the book, they evaced to the deep because the deep had never been taken whiel the walls were defended. they knew they were gonna die, but they stood the best chance there, and they knew they'd take the largest number of the enemy with them.
in the movie it was more of a feel of 'oh noes, we gonna die! we gotta hide in the deep cause it's never been taken, so we'll be safe there."

it's a little thing, but it's frustrating. the Rohirrim wern't running from the fight, they were maximizing the size of their honor guard in the afterlife:)
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PostSubject: Re: Not so elementary, my dear Watson   Thu May 19, 2011 5:03 pm

Joy wrote:
Well, now, you boys are in luck. I just hired somebody to handle all the spankings.

Here's a picture...






ENJOY!

Not all at once!

Single file!

Wait your turn! Razz

i think my ex wife dated this guy before we were divorced.
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Bluetick
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PostSubject: Re: Not so elementary, my dear Watson   Thu May 19, 2011 5:31 pm

There ain't no way this guy is spankin me. He ain't bad enough, and he ain't pretty enough, and he ain't woman enough. Smile
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PostSubject: Re: Not so elementary, my dear Watson   Thu May 19, 2011 7:42 pm

I bet he can make metal detectors RING for miles! I'm not kissing that, I might get stabbed!
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PostSubject: Re: Not so elementary, my dear Watson   Thu May 19, 2011 7:45 pm

Trust me. I ain't kissin him either.
If he tries, HE may get stabbed. Very Happy
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PostSubject: Re: Not so elementary, my dear Watson   Thu May 19, 2011 7:47 pm

Can you imagine the nightmare when he has to blow his nose?????
geek drunken Mad Suspect Wink
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PostSubject: Re: Not so elementary, my dear Watson   Thu May 19, 2011 7:48 pm

Just think what would happen if you shoved him into an MRI machine.
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Not so elementary, my dear Watson
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