DID YOU KNOW ~ LIST OF MEASURING DEVICES

• Accelerometer— Accelerations 
• Actinometer— Heating Power Of Sunlight
• Alcoholmeter— Alcoholic Strength Of Liquids.
• Altimeter— Altitude 
• Ammeter— Electric Current
• Anemometer— Windspeed
• Evaporimeter— Rate Of Evaporation
• Audiometer— Hearing
• Barkometer— Tanning Liquors Used In Tanning Leather
• Barometer— Air Pressure
• Bettsometer— Integrity Of Fabric Coverings On Aircraft
• Bevameter— Mechanical Properties Of Soil
• Bolometer— Electromagnetic Radiation
• Breathalyzer— Breath Alcohol Content
• Caliper— Distance
• Calorimeter— Heat Of Chemical Reactions
• Cathetometer— Vertical Distances
• Ceilometer— Height Of A Cloud Base
• Chronometer— Or Clock Time
• Clap-O-Meter— Volume Of Applause
• Colorimeter— Colour
• Creepmeter— Slow Surface Displacement Of An Active Geologic Fault In The Earth
• Declinometer— Magnetic Declination
• Densimeter— Specific Gravity Of Liquids
• Densitometer— Degree Of Darkness In Photographic Or Semitransparent Material
• Diffractometer— Structure Of Crystals
• Dilatometer— Volume Changes Caused By A Physical Or Chemical Process
• Disdrometer— Size, Speed, And Velocity Of Raindrops
• Dosimeter— Exposure To Hazards, Especially Radiation
• Elaeometer— Specific Gravity Of Oils
• Electrometer— Electric Charge
• Eudiometer— Change In Volume Of A Gas Mixture Following Combustion
• Evaporimeter— Rate OfbEvaporation
• Fathometer— Ocean Depth
• Galvanometer— Electricity
• Gas Pycnometer —VolumebAnd Density Of Solids
• Graphometer— Angles
• Heliometer— Variation Of ThebSun's Diameter
• Hydrometer— Specific Gravity Of Liquids (Density Of Liquids)
• Hygrometer— Humidity
• Inkometer— Ink
• Interferometer— Wave Interference

make an electromagnet

• A large iron nail (about 3 inches)
• About 3 feet of THIN COATED copper wire
• A fresh D size battery
• Some paper clips or other small magnetic objects

• 1. Leave about 8 inches of wire loose at one end and wrap most of the rest of the wire around the nail. Try not to overlap the wires.
• 2. Cut the wire (if needed) so that there is about another 8 inches loose at the other end too.

• 3. Now remove about an inch of the plastic coating from both ends of the wire and attach the one wire to one end of a battery and the other wire to the other end of the battery. See picture below. (It is best to tape the wires to the battery - be careful though, the wire could get very hot!)

• 4. Now you have an ELECTROMAGNET! Put the point of the nail near a few paper clips and it should pick them up!
• NOTE: Making an electromagnet uses up the battery somewhat quickly which is why the battery may get warm, so disconnect the wires when you are done exploring.

Most magnets, like the ones on many refrigerators, cannot be turned off, they are called permanent magnets. Magnets like the one you made that can be turned on and off, are called ELECTROMAGNETS. They run on electricity and are only magnetic when the electricity is flowing. The electricity flowing through the wire arranges the molecules in the nail so that they are attracted to certain metals. NEVER get the wires of the electromagnet near at household outlet! Be safe - have fun!

The project above is a DEMONSTRATION. To make it a true experiment, you can try to answer these questions:

1. Does the number of times you wrap the wire around the nail affect the strength of the nail?

2. Does the thickness or length of the nail affect the electromagnets strength?

3. Does the thickness of the wire affect the power of the electromagnet?

MAKE A LEVITATING ORB!

• 1 inch (2.5 cm) wide PVC Pipe about 24 inches (60cm) long. You can also use a regular balloon if you do not have PVC pipe.
• Mylar tinsel for Christmas trees. There are many types of tinsel - you should look for the thinnest and narrowest possible. The tinsel used in the video is about 1 millimeter wide. If it is much wider than that, the orb may be too heavy to levitate. (see below to get tinsel from Bob)
• A head of clean, dry hair
• Scissors

 

1. Arrange 6 strands of mylar together and tie them together in a knot at one end.
2. Tie them together again about 6 inches (15cm) from the first knot.
3. Cut the loose mylar strands off just past each knot.
4. Charge the PVC pipe by rubbing it back and forth through your hair for 10 seconds.
5. Hold the mylar orb (by the knot) above the charged pipe and let it drop and touch the pipe.
6. It should repel away and start floating. If the tinsel keeps sticking to the pipe, the tinsel is probably not thin enough and you will need to try another kind of tinsel or order some from us. (You will usually have to "recharge" the pipe before each levitation.)

It is all about static charges. Similar static charges repel away from each other. When you rub the pipe in your hair you give the pipe a negative static charge. The orb is attracted to the pipe at first because the orb has a positive charge. As soon as the orb touches the pipe, it picks up a negative charge. Since the pipe is negative and the tinsel orb is now negative, they repel away from each other and the orb levitates! The orb will also take on more of a "ball" appearance when charged since all the tinsel strands are repelling away from each other. Did you notice the orb is attracted to other objects around you - including you? That is because most objects (including you) have a positive charge.

The project above is a DEMONSTRATION. To make it a true experiment, you can try to answer these questions:

1. Does the number of mylar strands affect how well the orb levitates?
2. Do different materials (hair, fur, wool) build up better static charges?
3. How long does the static charge last / how can you make it last longer?
4. Do different widths of pipe affect the floating ability of the orb?

The Incredible Hoop Glider!

• A regular plastic drinking straw
• 3 X 5 inch index card or stiff paper
• Tape
• Scissors

• 1. Cut the index card or stiff paper into 3 separate pieces that measure 1 inch (2.5 cm) by 5 inches (13 cm.)
• 2. Take 2 of the pieces of paper and tape them together into a hoop as shown. Be sure to overlap the pieces about half an inch (1 cm) so that they keep a nice round shape once taped.

• 3. Use the last strip of paper to make a smaller hoop, overlapping the edges a bit like before.
• 4. Tape the paper loops to the ends of the straw as shown below. (notice that the straw is lined up on the inside of the loops)
  
  
• 5. That's it! Now hold the straw in the middle with the hoops on top and throw it in the air similar to how you might throw a dart angled slightly up. With some practice you can get it to go farther than many paper airplanes.

Can we really call that a plane? It may look weird, but you will discover it flies surprisingly well. The two sizes of hoops help to keep the straw balanced as it flies. The big hoop creates "drag" (or air resistance) which helps keep the straw level while the smaller hoop in at the front keeps your super hooper from turning off course. Some have asked why the plane does not turn over since the hoops are heavier than the straw. Since objects of different weight generally fall at the same speed, the hoop will keep its "upright" position. Let us know how far you were able to get the hoop glider to fly by submitting it to our BLOG PAGE.

The project above is a DEMONSTRATION. To make it a true experiment, you can try to answer these questions:

1. Does the placement of the hoops on the straw affect its flight distance?

2. Does the length of straw affect the flight? (You can cut the straws or attach straws together to test this)

3. Do more hoops help the hoop glider to fly better?

4. Do the hoops have to be lined up in order for the plane to fly well?

blobs in a bottle

• A clean 1 liter clear soda bottle
• 3/4 cup of water
• Vegetable Oil
• Fizzing tablets (such as Alka Seltzer)
• Food coloring

1. Pour the water into the bottle.

2. Use a measuring cup or funnel to slowly pour the vegetable oil into the bottle until it's almost full. You may have to wait a few minutes for the oil and water separate.

3. Add 10 drops of food coloring to the bottle (we like red, but any color will look great.) The drops will pass through the oil and then mix with the water below. 

4. Break a seltzer tablet in half and drop the half tablet into the bottle. Watch it sink to the bottom and let the blobby greatness begin!

5. To keep the effect going, just add another tablet piece. For a true lava lamp effect, shine a flashlight through the bottom of the bottle.

To begin, the oil stays above the water because the oil is lighter than the water or, more specifically, less dense than water. The oil and water do not mix because of something called "intermolecular polarity." That term is fun to bring up in dinner conversation. Molecular polarity basically means that water molecules are attracted to other water molecules. They get along fine, and can loosely bond together (drops.) This is similar to magnets that are attracted to each other. Oil molecules are attracted to other oil molecules, they get along fine as well. But the structures of the two molecules do not allow them to bond together. Of course, there’s a lot more fancy scientific language to describe density and molecular polarity, but maybe now you’ll at least look at that vinegrette salad dessing in a whole new way.

When you added the tablet piece, it sank to the bottom and started dissolving and creating a gas. As the gas bubbles rose, they took some of the colored water with them. When the blob of water reached the top, the gas escaped and down went the water. Cool, huh? By the way, you can store your "Blobs In A Bottle" with the cap on, and then anytime you want to bring it back to life, just add another tablet piece.

The project above is a DEMONSTRATION. To make it a true experiment, you can try to answer these questions:

1. Does the temperature of the water affect the reaction?
2. Does the size of the bottle affect how many blobs are produced?
3. Does the effect still work if the cap is put on the bottle?
4. Does the size of the tablet pieces affect the number of blobs created?

Important Full Forms of Computer Terminology

Important Full Forms of Computer Terminology
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1.) GOOGLE : Global Organization Of Oriented
Group Language Of Earth .
2.) YAHOO : Yet Another Hierarchical Officious
Oracle .
3.) WINDOW : Wide Interactive Network
Development for Office work Solution
4.) COMPUTER : Common Oriented Machine
Particularly United and used under Technical
and Educational Research.
5.) VIRUS : Vital Information Resources Under
Siege .
6.) UMTS : Universal Mobile Telecommunications
System .
7.) AMOLED: Active-matrix organic light-emitting
diode
8.) OLED : Organic light-emitting diode
9.) IMEI: International Mobile Equipment Identity .
10.) ESN: Electronic Serial Number .
11.) UPS: uninterrupted power supply .
12). HDMI: High-Definition Multimedia Interface
13.) VPN: virtual private network
14.) APN: Access Point Name
15.) SIM: Subscriber Identity Module
16.) LED: Light emitting diode.
17.) DLNA: Digital Living Network Alliance
18.) RAM: Random access memory.
19.) ROM: Read only memory.
20) VGA: Video Graphics Array
21) QVGA: Quarter Video Graphics Array
22) WVGA: Wide video graphics array.
23) WXGA: Wide screen Extended Graphics Array
24) USB: Universal serial Bus
25) WLAN: Wireless Local Area Network
26.) PPI: Pixels Per Inch
27.) LCD: Liquid Crystal Display.
28.) HSDPA: High speed down-link packet
access.
29.) HSUPA: High-Speed Uplink Packet Access
30.) HSPA: High Speed Packet Access
31.) GPRS: General Packet Radio Service
32.) EDGE: Enhanced Data Rates for Global
Evolution
33.)NFC: Near field communication
34.) OTG: on-the-go
35.) S-LCD: Super Liquid Crystal Display
36.) O.S: Operating system.
37.) SNS: Social network service
38.) H.S: HOTSPOT
39.) P.O.I: point of interest
40.)GPS: Global Positioning System
41.)DVD: Digital Video Disk / digital versatile disc
42.)DTP: Desk top publishing.
43.) DNSE: Digital natural sound engine .
44.) OVI: Ohio Video Intranet
45.)CDMA: Code Division Multiple Access
46.) WCDMA: Wide-band Code Division Multiple
Access
47.)GSM: Global System for Mobile
Communications
48.)WI-FI: Wireless Fidelity
49.) DIVX: Digital internet video access.
50.) .APK: authenticated public key.
51.) J2ME: java 2 micro edition
53.) DELL: Digital electronic link library.
54.)ACER: Acquisition Collaboration
Experimentation Reflection
55.)RSS: Really simple syndication
56.) TFT: thin film transistor
57.) AMR: Adaptive Multi- Rate
58.) MPEG: moving pictures experts group
59.)IVRS: Interactive Voice Response System
60.) HP: Hewlett Packard

make plastic milk

One cup of milk 4 teaspoons of white vinegar A bowl A strainer Adult help Ask your friendly adult to heat up the milk until it is hot, but not boiling Now ask the adult to carefully pour the milk into the bowl Add the vinegar to the milk and stir it up with a spoon for about a minute Now the fun part, pour the milk through the strainer into the sink - careful it may be hot! Left behind in the strainer is a mass of lumpy blobs. When it is cool enough, you can rinse the blobs off in water while you press them together . Now just mold it into a shape and it will harden in a few days. - Cool! Plastic? In milk? Well, sort of. You made a substance called CASEIN. It's from the latin word meaning "cheese." CasEin occurs when the protien in the milk meets the acid in the vinegar. The casein in milk does not mix with the acid and so it forms blobs. True plastics, called poymers, are a little different. If you want to make a true plastic and learn more about polymers, try the Homemade Slime experiment. Have fun! The project above is a DEMONSTRATION. To make it a true experiment, you can try to answer these questions: 1. Will more vinegar make more casein? 2. Will you get the same results with low-fat milk, soy milk? 3. Do all types of vinegar work? 4. Will other acids, such as lemon juice and orange juice work?