Showing posts with label science fair. Show all posts
Showing posts with label science fair. Show all posts

Feb 7, 2012

Lightning from the Wall

My "retro" charging station
I might be considered "retro," but I'm not as old as Ben Franklin flying his kite with a key attached to channel electricity into my apartment. But, with the advances in electricity demands coming out (iPods, iPads, cell phones, tablets, laptops, etc.), our energy needs are a little different now. So are the ways we have to plug them in to recharge. I did some searching for ways to channel the electricity to where it is needed, as proficiently as possible.

When I was a homeowner, I thought NOTHING of cutting out part of the wall, rewiring the outlets, and making them multi-gang outlets. Now that I live in an apartment, my landlord frowns on that. I resorted to using a plug strip next to my end table so I could plug in and charge up all of my stuff. But, in the pursuit of not only a cleaner method, but the addition of a USB charger, I came across the following, and thought I'd share it with you.

RCA Wall Plate Charger
I've always striven to follow technology because there is a little bit of a geek in me. But part of doing that has required me to follow the leading companies that move forward in development. So, the first solution I discovered for consolidating yet expanding my electricity needs was RCA coming out with the USB wall plate charger. How AWESOME is it to be able to have a three prong plug AND 2 USB charging stations right next to you?!?!

Job well done, and for only about $20.

However, since following technological advances, I've always been drawn to what Belkin has developed. It is as if they read my mind for what I'd like to see and what I want.

Since I spend a LOT of time in my car, I was looking for a way to charge my phone, my iPod, and my HP Tablet; by using the USB connection that comes with each item. I first purchased this Belkin product to make that happen (click HERE).

Belkin Wall Charger
But, as I have the time to do some research, I found that Belkin offers another option for doing that in the house. So, I will be getting one of THESE to put next to my end table and retire my retro plug strip...for also under $20...

Bottom line, there are some ways that you can streamline your charging needs but not sacrifice your USB connections on your computer or the plug space needed on the wall to make that happen...happy charging...


Jan 25, 2012

Science Fair Project - Jan 2012

Yes...unfortunately it is that "help your kid make the BEST science fair project ever." I survived this weekend working on the one with my son, and to attempt to make it easier for YOU, I'm sharing it. He had to "choose" what project he would attempt, and of course we went to the internet for some ideas. He made his "final choice" on Human Battery Power Science from this website. Don't scroll too much, if you want some ideas for yours, click on the link, and then go to the home page (okay, here is the HOME page of it).


The "point" of this one was listed as following (yeah, I copied and pasted it):




Purpose

To demonstrate that a human body can be used as a battery by producing an electrical current.

Additional information

Batteries are devices that store chemical energy and convert it to electrical energy. Consisting of one or more voltaic cells, batteries come in various sizes and forms and are integrated into most electronic and portable devices. 
___________________________________________________________________________________


We studied the Required Materials list, and had to figure out where to get them. We found the copper and aluminum plates at Hobby Lobby ($12 total); the  0-15VDC meter  and the pre-wired alligator clips at Radio Shack (meter was $13, clips were $7, a franchise store carries more than company stores). I had lumber/wood in the garage so it didn't "cost" anything, but if had to price it out, it would be about $4.00 total. We went to Home Depot to get the plate mounting screws (stainless steel to prevent oxidation) since I wanted the least "conductive" ones & was fresh out of them (cost $2, and I actually used a $2 bill to pay).


So, we built it according to the directions. And conducted some personal tests. Here are the results:


When conducting the experiment as is listed on the website above, it will show the results you desire.
 If you "alter" the experiment a little, you will discover some more.
I recommend the "wet hands" version because we all know that water conducts more electricity.
Don't paint or stain the wood, since those components add a "variable of conductivity" into the experiment. Bare wood doesn't, and makes it all easier for you as a parent.
Mount the panels with a 1/4" overhang on the wood to connect the clips to.
PRACTICE  the presentation several times. Your scientist-to-be needs to be comfortable with what they are showing and presenting. 
Start the presentation by clipping a 9 volt battery, to demonstrate that the meter works. When you get to the "hands-on" part, you will show that the electricity reading is less, but the audience knows that the meter works.


Bottom line, by using an analog meter (NOT digital) impacts observers more, and I learned that the human body can generate an electric charge of about .5 volt DC charge....