I am looking for light weight magnetic balls for a science demonstration for elementary school kids that I teach. magnetic coating on plastic balls or very light magnetic balls would be ideal. Is there a place I look for these?
suggestions will be greatly appreciated
Thanks
Pal
Dear all, last evening I watched a movie about the 18 century,and there were shown windows with panes.I was amazed,because if I'm not wrong as i was a kid I a read book about the history of glass.
As much as I remember there was written that that the first flat glass manufacturing technology wa
I am sory for asking an out of forum question but I am wondering for its answer. It is generally said that reading books etc. is prohibited during sitting in bus and traveling on road because it has negative effects on eyes. Is it true?
How to select a motor for a cooling fan of 12 kg weight and speed of 960rpm used for a cooling tower (60TR)to cool the water from 60-70 degrees to normal .The equipment (an evaporator)is running for 6 hrs of day .the hot vapour makes problem to the insulation of motor .the motor is coupled directly
I want to know about the working of a normal packing machine in detail
This is required for a linear shifter mechanism in a Continuously Variable Transmission (CVT). As such it will be subjected to extreme environmental conditions from -65C <--> +300 Celcious. The stepper motor will be mounted externally on the transmission but the positioning sensors will be intern
i want to know about phosphate hide out in boilers ?
i want to know about the pressure setting of safety valves of 160TPH ,104KG/CM2 boilers?
What is measure difference between ASME B-16.47 series A and Series B flanges.
an electric agricultural tractor without battery, running in a spiral, working a circular field. Power is supplied by cable (held aloft over crop) reeled out from center of spiral. Additional vehicles running the spiral used as moving power line towers, enabling a great maximum possible distance be
how much would it be to replace , on board computer in this car 2000 chevey cavilier
The Marquesas Islands of French Polynesia are one of the remotest island groups of the South Pacific. Jocelyne Henua Enana Tours in Taiohae on Nuku Hiva island can book accommodations and tours on Nuku Hiva and Hiva Oa, with extensions to Ua Huka and Ua Pou. Boat tours to bays on the south side of Nuku Hiva provide a chance to see dolphins.
I saw this exchange between a couple of members
CaptMoosie:
3). Going Green in other ways is a huge hobby of mine! Installation of a 7.56 Kw Solar PV system on our house roof to help us get nearly off the electric grid.....it'll be installed sometime this next month by the S
Posted by David McRee at BlogTheBeach.com
I’ve gone through my 2009 photos and picked out some of my favorites to share. They are favorites because they evoke wonderful memories, not because of any photographic excellence. Any photos that qualify as technically good are the result of pure dumb luck on my part.
We spent three days in [...]
Remember the extremely popular and heart-touching Stand By Me video? That was recorded in a virtual studio around the world during different days. Here's the not-less-heart-touching All You Need Is Love, recorded in 156 countries at exactly the same time:
The video was made on December 7, 2009 at 1:30pm Greenwich Meridian Time. All the different musicians in 156 locations started to sing the song at that time, with the same tempo. They did a good job: When the results were assembled in a single track, everything matched.
The event was organized by Starbucks to help raise awareness of AIDS in Africa for the (RED) foundation. Like the Stand By Me video, the result will touch even the more-coldester-hearted bastards among you. And if it doesn't, you need a punch in the bracket.
Another happy way to start 2010. Pass the link along. [Starbucks Love Project]
Yes, me neither. But these guys almost did, filming this crystal clear video—much better and vertigo-inducing than the previous one, thanks to a better camera and wider lens angle—on December 31, from the tip of the Burj Dubai.
New Year's Eve in Space, Slate
"Last week a Russian spacecraft ferried three astronauts to the International Space Station to join the two who had been manning it since October. The crew took Christmas Day off to share meals together. What about celebrating New Year's--how do you pick the right moment when you're hurtling through time zones at 17,500 miles per hour?"
Anyone one written this exam lately
Dear 2010, you'll bring the iSlate, Android 3, Natal, iPhone 4, and whatever other cool things we can't foresee now. But now you're too short, young, and cute. Don't worry, you'll get there. Happy New Year, everyone. [Thanks David Keyes]
Before the internet, there were movies. And before movies, there were typewriters. And before typewriters, there was chewing gum. And before chewing gum, there were only 
