Nokia has finally opened the pre-order booking for its highly-awaited Nokia Lumia 800 phone in India. People can either pre-order the device online or they can visit any Nokia Priority store to pre-book the device. The Lumia 800 is available for demo on Nokia priority stores from today.
Wednesday, December 7, 2011
Deriving Gauss's law from Coulomb's law
Deriving Gauss's law from Coulomb's law
Gauss's law can be derived from Coulomb's law, which states that the electric field due to a stationary point charge is:
HOW TO DERIVING COULOMB'S LAW FROM GAUSS'S LAW
Deriving Coulomb's law from Gauss's law
Strictly speaking, Coulomb's law cannot be derived from Gauss's law alone, since Gauss's law does not give any information regarding the curl of E (see Helmholtz decomposition and Faraday's law). However, Coulomb's law can be proven from Gauss's law if it is assumed, in addition, that the electric field from a point charge is spherically-symmetric (this assumption, like Coulomb's law itself, is exactly true if the charge is stationary, and approximately true if the charge is in motion).
The Samsung GALAXY Y Android Phone
Samsung GALAXY Y S5360 is powered by strong processor and runs on Android 2.3 (Gingerbread) operating system. It features a 262K Colour TFT display with resolution 320 x 240 and battery capacity with 1,200mAh, talking time up to 360 minutes and stand by time up to Upto 120 hours. It has large virtual QWERTY keyboard with Quicktype by SWYPE technology to literally trace letters in a single continuous movement. It supports built-in 2MP Camera. Along with 160 MB of internal memory space, it supports up to 32 GB of external memory.
Samsung GALAXY Y S5360 is available at Rs.6990 Indian Rupees.
Bluetooth, high-speed microUSB 2.0 and Wi-Fi connectivity are other prominent connectivity features of Samsung GALAXY Y.
THE Microsoft CRM R7 2011 Unveiled in India with In-built Social Network
Microsoft has announced the availability of CRM R7 2011 in India. CRM R7 2011 integrates social capabilities into Microsoft Dynamics CRM and further strengthens service and marketing processes for businesses. Its integration with Office 365 makes the value proposition for customers even more compelling.
Windows Store to Launch as Part of Windows 8 Beta in Feb, 2012
Windows Store to Open in February with the Beta of Windows 8
the Govt asks Google, Facebook to screen user content
The Indian government has asked Internet companies and social media sites like Facebook to prescreen user content from India and to remove disparaging, inflammatory or defamatory content before it goes online..[...]
Ambitious Pacific Crossing of the Sea-Gliding Robots Embark
Sea-Gliding Robots Embark on Ambitious Pacific Crossing
Two pairs of self-propelled oceangoing robots have begun slowly making their way across the Pacific Ocean, setting off Nov. 17 from San Francisco on an epic journey covering 33,000 nautical miles. During their 300-day trip, the robots will collect 2.25 million pieces of data, and attempt to break a world record for the longest distance ever traversed by an unmanned vehicle.
The Every Auto Accident Resulting In Injury In Great Britain, 1999-2010 (Heat Map)
Every Injury Auto Accident inGreat Britain, 1999-2010. IMAGE BY BBC
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