French Artist And Designer Creates Elegant Graffiti Art Using Water And LED Lights

By Meera Dolasia on 08/26/2012

Young people and especially teenagers choose art to express themselves. Well, many of these 'expressions' is graffiti.On walls, on garage doors, on the floor and wherever you can imagine a graffiti can be done. But it is really difficult to be undone. The French artist Antonin Fourneau has probably experienced a situation like that and with the Digitalarti Artlab team they decided to create a graffiti that can easily be undone. After many plans and tryouts they create a graffiti wall made out of led lights and when the light comes in touch with water it turns on. 

This is amazing. One of the coolest thing I have ever seen in my life. Graffiti made out of led light and water? It is pretty amazing how an electric shock doesn't occur. This is evolution of human kind and we can make beautiful creations using this kind of technology. It mentions in the article that there might be a tour of it but i am not sure if it is only going to be in france or all around Europe. I would really want to see from close how this 'magic' works. 

Dolasia, Meera. "French Artist And Designer Creates Elegant Graffiti Art Using Water And LED Lights." Dogo News. N.p., 26 Aug. 2012.

 Web. 02 Sept. 2012.

<http://www.dogonews.com/2012/8/26/ french-artist-and-designer-creates-elegant-graffiti-art-using-water-and-led-lights>.

http://www.dogonews.com/2012/8/26/french-artist-and-designer-creates-elegant-graffiti-art-using-water-and-led-lights 

Comparing Atom Sizes Lab

 For homework, we did a lab called comparing atom sizes. What we needed to do is simple. Find the relative radius of an atom by diving the radius of an element with the radius of the first element in the group. In order to understand the increasing and decreasing oh the relative radius of the atoms, we needed to do a graph which is showed above.

Conclusion: Predict where you would find the largest atom in any group of elements. What evidence would you need to tell if your prediction is correct? You would find the largest atom in a group at the bottom of the column. The evidence that I would need to tell if my prediction is correct, is making  table like the above one and finding all the relative radius of the family

Video Of The Week- The Smallest Periodic Table Of Elements

By Meera Dolasia,

This is amazing. This week in class we learned about atoms and bonding and part of our lessons were the periodic tables. While I was looking through the internet for an awesome current event I found this. The smallest periodic table. On the video it says that a student at United Kingdom's University of Nottingham's Nanotechnology and Nanoscience center cut a hair from his professor's curly hair and put it in a sticky tape that conducts electricity and out it at a machine that 'carved' on the professor's hair the periodic table for a birthday present. To give you an idea of how small it is, it can fit in a sticky note a million times and have still space! The length of the periodic table is 89.67mm and the height is 46.39mm

The reason I chose this event is because it is related to our topic in class and I think that it is really cool because the smallest periodic table i have seen it is in our text book which is almost a A4 paper!This nanotechnology is the coolest thing i have ever since and i sure that professor had the best birthday gift.



Dolasia, Meera. "Video Of The Week - The World's Smallest Periodic Table Of
     Elements." Dogo News. N.p., 10 Jan. 2011. Web. 26 Aug. 2012.
     <http://www.dogonews.com/2011/1/10/
     video-of-the-week-the-worlds-smallest-periodic-table>.

http://www.dogonews.com/2011/1/10/video-of-the-week-the-worlds-smallest-periodic-table

Starting 8 Grade

8 Grade started so did science. This year we will use again blogs and I chose to use this one instead of making new ones. Here you are going to get informed about science news and what we do in class :)

Lab Report- Create Our Own One

Lab Report

Despina Katsirouba

7A Science

Mrs. Medenica

June 4^th 2012

Guiding Question: Which of the rubber bands with different thicknesses and diameters of the caps make the strongest, loudest sound?

Hypothesis: The thickest rubber band that is stretched the most will also make the loudest sound.

Variables:  

• Controlled: strength of the pull, sizes of the rubber bands
• Manipulated: stretching of the rubber bands
• Responding: different sounds the rubber bands create

Materials: rubber bands (of three different thicknesses), caps of jars with different diameters, ruler, iphone to measure the VU

Procedure:

First you have to measure the diameters of the caps and the thicknesses of the rubber bands. Then you put the rubber bands around the caps and pull them to create a sound. Then see which rubber band on which jar makes the loudest sound.

Diameters of caps:

1. 12 cm
2. 10 cm
3. 9.5 cm

Thicknesses of the rubber bands:

1. 0.5 cm
2. 0.3 cm
3. 0.2 cm

Recordings (in volume units):

Rubber Band 1:

• Cap 1: 10 VU
• Cap 2: 7 VU
• Cap 3: 15 VU

Rubber Band 2:

• Cap 1: 15 VU
• Cap 2: 7 VU
• Cap 3: 15 VU

Rubber Band 3:

• Cap 1: 7 VU
• Cap 2: 10 VU
• Cap 3: 18 VU

Data Table/s (This is as far as you will get until you complete the table, but you MUST know what data you will collect BEFORE you begin)  

Graphs:

Data Analysis: The thinnest rubber band on the smallest cap makes the loudest sound, 18 VU. A pattern that I recognized on rubber bands one and two on the second cap is that they both make 6.5 VU. The same rubber bands make the same VU, 14.5, on cap three. I don’t think our data was very precise since the i-phone source was not very good so the numbers that are sown in the graph may not be the exact ones but very close.

Conclusion: Which of the rubber bands with different thicknesses and diameters of the caps make the strongest, loudest sound? The thinnest rubber band placed around the smallest one. Our answer to your guiding question was not even close to out hypothesis since we said the opposite; that the thickest rubber band will make the loudest noise around the bigger cap. The i-phone application that we used was not very precise but if we had used a special tool that probably Dr. G has. Since we had to create our own lab I think the application was enough. In my opinion, our hypothesis was based on our basic knowledge of sound waves, since it is thick so it would probably make the thickest sound just like the guitar.

Further Inquiry: The application that we used on the i-phone to measure the VU was not very accurate so the number had to be rounded so not very precise. Although we went to a quiet room where there was no one there so no sound occured but again it was not as precise as we expected it to be. We could have used a tool that probably Dr. G has to measure it more precisely. Next time we would try to find another way of measuring. Also we could use caps with more difference between them so the results would be higher in difference and try it many times so it can be more precise. The reasons our results came out really close to each other is because there wasn’t much difference between the caps, the application was not very precise and the thickness of the rubber bands wasn’t much. I don’t think we would change the hypothesis or inquiries if we had a different tool.