Geek & Nerd Haven

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Geek & Nerd Haven

A group for us Geek and Nerds to talk about things we like. Technology, sci-fi, movies, TV, collecting, games, comics, science, etc.

Members: 187
Latest Activity: May 14

Discussion Forum

Zombie Slot Machine

Started by Ruth Anthony-Gardner. Last reply by Loren Miller May 14. 2 Replies

Tristan Harris shows that using your smart phone is as addictive as playing a slot machine.How…Continue

Tags: app design, mind manipulation

Beyond fake news, bot networks, and trolls - to automated behavior manipulation

Started by Ruth Anthony-Gardner. Last reply by Ruth Anthony-Gardner Apr 1. 4 Replies

The Rise of the Weaponized AI Propaganda MachineCambridge Analytica, a new automated propaganda machine poised to manage White House digital…Continue

Tags: weaponized AI propaganda machine

CIA cyberwarfare on us

Started by Ruth Anthony-Gardner. Last reply by Bertold Brautigan Mar 9. 1 Reply

Just in case you feel the current administration doesn't have enough power, we find out that the CIA can take control of your iPhone and Twitter account, or watch you through your smart Samsung TV, at will. Moreover, the vulnerabilities they…Continue

Tags: cyber weapons, cyberwarfare, spyware, weaponized Apple, Google, and Microsoft vulnerabilities

AI against trolls

Started by Ruth Anthony-Gardner Mar 8. 0 Replies

Now Anyone Can Deploy Google’s Troll-Fighting AIHorray! I hope this works!A Google offshoot called Jigsaw declared war on trolls, launching a…Continue

Tags: troll control, Jigsaw

In the US, Ads watch YOU!

Started by Ruth Anthony-Gardner. Last reply by Joseph P Jan 23. 1 Reply

Secret signals between your TV, computer, laptop, smartphone, etc, so corporations can  follow your every move. Creepy!…Continue

Tags: spyware apps

Magnet Toys

Started by Ruth Anthony-Gardner. Last reply by Joseph P Jan 12. 1 Reply

Neat videositeShort story: We’re a group of three university students from Norway who have for 3 years worked with a magnetic game…Continue

Tags: Magination, magnetic toys

Cloud Hosting Infected

Started by Ruth Anthony-Gardner Nov 1, 2016. 0 Replies

'Lurking malice' in cloud hosting services, study findsMalware in cloud hosting services is going undetected.Overall, the researchers scanned more than…Continue

Tags: malicious software, cloud hosting

Comment Wall

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Comment by Mriana on January 9, 2015 at 5:16pm

ROFL  :D

Comment by Grinning Cat on January 9, 2015 at 4:32pm

If you're important enough, you need only stand on the rolling chair holding the lightbulb, because the world will revolve around you!

Comment by Mriana on January 9, 2015 at 1:42pm

Yeah, it's not the smartest way to change a light bulb, but it works... if you're very careful.

Comment by Idaho Spud on January 9, 2015 at 11:39am

Being short does have quite a few disadvantages.  I'm medium height (5' 8"), so don't have too many problems, but I've used rolling chairs often, mostly because I'm often too lazy to get a proper stool.

Comment by Mriana on January 9, 2015 at 11:29am

And thanks.  I'm glad you enjoyed my sense of humour.  I have to have one, as you can see.  lol

Comment by Mriana on January 9, 2015 at 11:29am

Maybe, Idaho Spud, but the floor and table looks really yellow on my comp and the angle of it makes it look like a child's home-made ladder.  I've made many different attempts as a kid (a very short one at that) to make various ladders. According to my mother (who was 4'11" like myself, until she shrunk to about 4' 8" and now is 70) many people thought I was 2 y.o. when I was 5 y.o. and the dr was a bit concerned until he also found out my bio-father was 5' 3".  She was always on me to use either a stool or a step ladder, instead of experimenting with different ways to climb like an ape or make ladders.  When I had my sons and they began to climb on counters and stuff to reach things, I didn't scold them for it, because I was the one who taught them to do it.  lol  Try balancing on a rolling adjustable desk chair to change a light bulb.  I've done it many times.  Can't say it is safe, but anything that works is good enough.  Who knows?  I could have been a child's attempt at a home-made ladder.  :lol: 

Comment by Idaho Spud on January 9, 2015 at 9:53am

Yes, that top pencil does look ready to fail.

Comment by Joseph P on January 9, 2015 at 9:28am

Yup, it's a bit harder to take in, in a static photo like that.  It took me a few seconds to process that they were all tied together and represented something that stayed that way more-or-less securely (until that top pencil snaps).

Comment by Idaho Spud on January 9, 2015 at 9:24am

Mriana, perhaps you would have wondered if you had seen it in person.  The picture is a little dark on my computer, and so took me a while to figure the whole thing out.  I only recognized what it was supposed to be immediately because I've seen that type of thing many times before.

In any case, I enjoyed your sense of humor in your first post.

Comment by Joseph P on January 9, 2015 at 5:46am

It doesn't fall because the objects are perfectly balanced around their point of contact.  Well, the center of gravity of the whole doesn't have to be perfectly balanced on the edge of the table, but the closer you can get it to the edge, the more impressive you can make it look.

In this case, the head of the hammer and the head of the wrench are the heaviest parts of the ensemble.  Since those are under the table, they bring the center of mass a great deal back in that direction.

We're generally bad at estimating masses of relative things, when they're made of drastically different-mass materials.  With most hammers, particularly fiberglass ones, the head is several times the mass of the handle.  That's kind of the point: getting as much mass as possible further up the lever, away from the fulcrum, increasing the mechanical advantage without increasing the total mass that we have to hold.

The forks and wrench are similar.  We tend to think of wrenches as one, solid piece, about equally dense throughout, since they're made of solid metal ... but look which way the head is facing.  The forks are relatively light, since they're very thin.  Our brains say, "Well, that thing is made out of metal, and it's so long and wide," ignoring the third dimension.

 

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