User:Ayapici/enes100/Speakers

Back to Speakers team page.

Give instructor top 3 project choice list
My top three project preferences were Perfume, Corn Starch, and Music project, and I was assign to work on Corn starch..

Write problem statement
One of my research interests is the behavior of corn starch gels. Corn starch has interesting properties that I will try to find out why it act like this.

Assign Task1
task one for the week one to get the corn starch, and make an oobleck mixture, and find the recipe.

Compare actual work done to Task2
The Major task was done completely, I was able to get corn starch, and found how it acts when you mix it with water, it became solid and liquid.

Week1 Narrative
The starch made from the endosperm of corn, containing amylose and amylopectin starch molecules. When starch is heated in water it forms a viscous, opaque paste. The paste forms semisolid gels upon cooling and has the ability to form strong adhesive films when spread and dried. Cornstarch is not freeze-thaw stable and is used widely except when clarity or the lack of gel formation is required. It exists as fine or course powders. The coarse starch is sometimes termed pearl starch. It is used in sauces, puddings. pie fillings. and salad dressings. the typical usage level is 1 to 5 percent. It is also termed common, regular or unmodified cornstarch.



One of the most important thing was made this week was how to get the perfect recipe for the corn starch to act like solid and liquid.

At first, I got the corn starch, and because I was very excited I ended up opening the box from the bottom. After getting my materials ready, I followed the link that had the main recipe..:recipe of Corn Starch, I followed step by step and I had some issues, my first problem was less water, and I add more water and waited about 10 minute and start stirring again.The mixture was acting like glue or honey most likely and that is how it spouse to be like. After adding more corn starch and waiting little more, nothing much happen it was not as sticky as it should have been. I have decided to add more corn starch to the mixture, and find out how it is going to act, if it acts like a solid I would add more water. I finally reached my goal, it was acting as a solid and a liquid.

This part of the project was not difficult but it just needed some preciseness and accuracy by adding water and corn starch to find the perfect amount for corn starch to act like its states (solid and liquid) To see how corn Starch act, in a very short video just follow the link. The Mixture of corn starch

Things that You need to make the mixture
 * 1)Cornstarch
 * 2)Pitcher of water
 * 3)Measuring cups
 * 4)Mixing spoon
 * 5)Newspaper for covering tables
 * 6)Food coloring or tempera paint (for fun)if you want...

Week1 Peer Review
I made a comment on Ben's page.Ben's Week1 Peer Review Regarding how good he is putting his documentation on wiki pages. And talked about his video compared with mine... I also made a comment on Andrew's page that he should document his work on wiki Andrew's Week1 Peer Review

Assign Task2
My task will be putting the corn starch into the speaker cone and use the vibration, to create some monsters. And perhaps before that to determine how to connect the stereo to the laptop.

Compare actual work done to Task2
In week two, I have successfully connect the stereo to the laptop and created the corn starch monsters inside the speaker's cone.

Week2 Narrative

 * NCH tone generator.jpg
 * Food color in corn starch.jpg
 * Speaker that have been for the task.jpg
 * The whole set up.jpg

In this week task, I have accomplished a massive part of the project, I have actually ,connected my laptop to the stereo, and controlled the audio system by using the software called NCH tine generator. and most importantly I have created corn starch monsters inside the speaker's cone

My first goal was to connect the speakers to the stereo and to see if they are worth working for. That was not very difficult task, it was simply connecting wires into the right place at the back of the stereo and back of the speakers. My next step was to connect all stereo to the laptop that could allow us me to control the frequency with the amplifier. I have tried using all sort of cables but it did not work. I made some research about how to hook your stereo to your PC/laptop on Google and I have found a great website that explain everything smoothly step by step just click the link for more information how to hook up your stereo to your PC I got an RCA (Radio Corporation of America) cable connector and follow the steps but still did not work, some issues occurred. There are for tune section on the stereo, : 1)CD mode : 2) AM/FM mode : 3) Tape mode : 4) VCR mode. I thought, it should be on the AM/FM mode because it is using the radio signals, but I was wrong, it was the VCR mode. After a long time I have determined that it is the VCR mode that I have to keep the stereo in in order to make the connection work properly.

Lastly, I made a the mixture of corn starch and add some green food color just for the fun of it. Poured the corn starch into the speaker cone, and turn the volume on very gently, and watching how the corn starch behave. As I was increasing the volume, I could see that vibration gets stronger and stronger at the full blast it was trowing the cornstarch everywhere. This week task very fascinating I have recorded most important parts and add some pictures as you could see it here in Wikiversity entry just click to the video links here.


 * Corn starch monster video#1
 * Corn starch monster video#2
 * Corn starch monster video#3
 * Corn starch monster video#4

Week2 Peer Review
I have made a comment on Ben's individual page that how cool his videos are. Ben's Week2 Peer Review I have also commented on Andrew's page that he should show more work on wikiversity.Andrew's Week1 Peer Review

Assign Task3
I will be working Ferro fluid and find out what I need for this part of the project.

Compare actual work done to Task2
I have purchased pigmented black ink and tried in my experiment this week, but after adding the vegetable oil and mixing it, I have poured the mixed ink and oil onto the metal flat surface.. and I did not work.

Week3 Narrative
material I have used in my experiment as follows
 * 1. regular ink for printing
 * 2. a clear cup to mix
 * 3. sheet of metal tray
 * 4. chopstick
 * 5. gloves
 * 6. magnets



the video of regular ink for ferrofluid







In this week task, I have decided to work on ferromagnetic fluid by using the ink and mix it with vegetable oil to create some unusual behavior of an compound. At first after getting the ink, I wanted to use a very small amount of the ink and add a little bit of vegetable oil. I poured in a clear cup as you can see on the pictures about 5ml ink and 3 ml vegetable oil. and I started to mix the mixture with a chopstick, and let it sit a little bit.. Then I put my gloves on and to make sure that I don't color myself with ink mainly to not make a mess. I put the metal flat on my desk and pour a little bit and start moving the magnet from underneath around. The problem occurred, there were no movement of ink inside the metal tray.

my solution was to pour more ink inside the metal tray and start over again, and I did that, the result was the same. Then my second solution was to add more vegetable oil and tried again nothing happened. I wanted to make some research and to determine about how to make the ferrofluid mixtures ready.. I have found the website at this link [the link how to make ferrofluid] and found that the ink I am using is wrong ink, I needed to use the magnetic ink to compelete this task..

I wanted to add here for some people who may not have heard what is ferrofluid, what does it do? A liquid magnet or ferrofluid is a colloidal mixture of magnetic particles (~10 nm in diameter) in a liquid carrier. The carrier contains a surfactant to prevent the particles from sticking together. Ferrofluids can be suspended in water or in an organic fluid. A typical ferrofluid is about 5% magnetic solids, 10% surfactant, and 85% carrier, by volume. One type of ferrofluid you can make uses magnetite for the magnetic particles, oleic acid as the surfactant, and kerosene as the carrier fluid to suspend the particles

Week3 Peer Review
I posted a comment on Ben's discussion page regarding the documentation of work that should be posted.

I have also made a comment on Andrew's discussion page saying that he needs to work on wikiversity pages, Z. Hill's discussion page

Assign Task4
Now, I know what to do for the next step, I will get the magnetic ink and make the experiment of ferrofluid. I have the recipe and the set up, all I need is the magnetic ink.or just add some iron pieces inside the ink. This will be my task 4.

Compare actual work done to Task2
Rationalize differences

Week4 Narrative
Upload photos to wikimedia. Upload video to youtube. Convert all spreadsheets, documents, and presentations to wiki format and create wiki subpage of your page for each of them. Link to them here in a narrative that tells a story. High light the problems (engineering problems) you had and how you solved them.

Week4 Peer Review
Go to each team mates weekly summary wiki page. Read their activities and narrative. Then go the associated discussion page. Say something positive on this page. Try some constructive criticism. Add your name and 1sfoerster 13:32, 28 August 2011 (UTC) to create a time and date stamp. Create a new category if another team mate has already commented here.

Complete Project Page
Follow the "project done" format.

Start Next Project Week0 activities
During this week you will perform the week0 activities of the next project.