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The two raw materials: baking soda and vinegar, used to make hot ice need to be free of impurities. Ensuring this is very difficult, which is why it is better to purchase ready-made sodium acetate. You can purchase it from online stores like eBay, Trade Me, etc. Sodium acetate is also available in warming pads, hand warmers, etc. Just cut open these pads or hand warmers with a knife and empty out the contents. However, sodium acetate obtained from these warming applications will appear like a gel. Nevertheless, it satisfies the purpose. Moreover, purchasing ready-made sodium acetate simplifies and speeds up the entire hot ice making process.

Requirements
•Sodium acetate powder (One cup)
•Water
•Steel saucepan
Preparation Procedure

Step 1
In a steel saucepan, add two cups of water and begin heating it. Now, gradually add a cup of sodium acetate into the water and stir, so that it dissolves. Do not add it all at once. Instead, add it gradually, ensuring all the crystals are getting dissolved.

Step 2
The solution should not be brought to a boil, instead must be heated on low heat. Do not overheat the solution, or else the solution will develop a yellowish or brownish tinge on solidifying. This will not look so appealing in a science fair, as it will not resemble ice.

Step 3
Keep stirring the solution, as you add sodium acetate crystals. Now, the key here is getting a supersaturated solution. This is because, if the solution is not supersaturated, when the solution is placed in the refrigerator, it will crystallize, thereby defeating the whole aim of the experiment.

Step 4
Since we are looking for a supersaturated solution, we need to make sure no more sodium acetate crystals dissolve into the water. You will know the solution is supersaturated, when some crystals remain at the bottom of the beaker or saucepan, even after stirring for quite a while. This indicates your supersaturated solution of sodium acetate is ready.

Step 5
You can also do it the other way round, wherein, you can first add sodium acetate into the beaker and then add water gradually. However, be careful not to add too much water. read more »

Mobile Phone as a Credit Card?
Radio Frequency Identification (RFID) is a very fast growing technology, which uses radio waves to transmit information from a device or a tag. One of the important applications of RFID is near-field communication (NFC) which allows money transactions, and information exchange between devices which have NFC chips embedded in them. A smart phone could be used as a credit card and an ID card, if it has the NFC radio frequency chip, enabled with NFC standards.

4G Mobile Technology
4G (fourth generation) technology is an initiative that aims to move beyond the limitations and problems in the present 3G technology. Some of the enhancement features projected in 4G technology are:
•Higher data rate
•Broader bandwidth
•Smoother and quicker handoff
•Seamless service
•High quality voice communication
•high-definition video
3G technology mobile phones can deliver a data rate of 384Kbps to 2Mbps. 4G aims to reach a limit of 100Mbps for mobile phone users and 1Gbps for stationary users. 4G implementation is quite expensive and is not available in all mobile phones now. It is expected that soon 4G will spread and will be widely used by all mobile phone users.

Mobile Commerce
Mobile phones enabled with Internet services are used by business analysts for mobile commerce. Mobile commerce is defined as “Mobile commerce is any transaction, involving the transfer of ownership or rights to use goods and services, which is initiated and/or completed by using mobile access to computer-mediated networks with the help of an electronic device.” Business-to-business (B2B) and business-to-customer (B2C) are the two important applications of mobile commerce. Mobile commerce technology started to grow rapidly from the year 2000 onwards. Some of the mobile commerce services are mobile banking, mobile marketing and advertising, mobile brokerage, auctions, etc. read more »

New Apple company iphone5 capabilities andrates will big surprise many of us. Although it is not launched then there isno recognized specifics of any specific relieve night out nevertheless, however, there isdefinitely a lot of rumours about it. As per the information, Iphone 5 isscheduled to be removed in the summertime of 2011, coinciding with Apple’straditional Summer-Come july 1st and would discharge of new Iphone types. So far as I am justinvolved, The month of january 2011 also seems to be a pleasant release time. This could alsoaid Apple company right the aerial difficulty noticeable in the present Iphone4. Theymay also bring in yet another edition 4 with all the rectification rather than waiting aroundfor 6th installation.

There arestudies that ipad3 will certainly provide an enhanced os, which will have a wayto gain access to 4G sites. It will offer extremely fast processor chip, enhancedlife cycle of battery that can have up to 14 hrs of talk time on third generation and 7 hours onAG. The fifth-generation design will also gain more service providers apart fromAT&T. Verizon wireless is that are one more job. Video clip chitchat on 3G and 4Gsites is likewise a reality, which is currently useful only on Wi-Fi. Thegroundbreaking face recognition technologies and video clip decision abilitycan also be packed with new functions. And most importantly, a robust 8mega-pixel camera is meant built-in with Iphone 3gs 5. The newest mobile phone can alsohave radiofrequency recognition also. Otherwise this could happen, using the attribute, youwill use the Apple iphone much like make use of your charge card. Should this happen, you’ll be able toignore standing in the queue in the see once and for all. Just spendto your items easily by waving your Iphone in the panel. This can be a newtrademarked technology that will be introduced by Apple mackintosh. The patent depictsthat the highly effective RFID trap might be constructed into the circuits in the Iphone or ipod touchtouchscreen display.

Which isnot all another Apple iphone storage will likely be a huge 64 GB. It could alsoconsist of far more storage space compared to the existing capability of the Apple Iphone 4g which onlyhas 16 Gigabyte as well as set it to Gigabyte of recollection.

In the event you considered Iphone for is basically modern andthin than handset, Apple iphone 5 will surprise you more. It’ll be evenleaner compared to current a single and will have a shiny wine glass back piece. The display screenwill be fully damage and shatterproof. The cellular phone consumers is going to becapable to determine different colors to be able to e-mail balances. True Gps navigation is going to bebuilt-in too.