iPad 2 has better specs.
Check the review below(sources)
The main difference between the iPad 1 and 2 is that the iPad 2 is thinner and lighter than the iPad 1. The iPad 2 is also faster than the first iPad and the iPad 2 has front and rear cameras.
ipad 2 is one third thinner than ipad 1 ipad 2 has a dual core 1ghz a5 chip and ipad 1 has a single core 1ghz a4 chip so ipad 2 should have almost twice as much processing power ipad 2 has 2 cameras and ipad 1 doesn't have any cameras
Yes, though the iPad 3 is one mm thicker than the iPad 2
The iPad 3 is rumored to be different than the iPad 2. The main differences are a better quality screen and pricing differences.
No, the 2 is thinner. The length and width are the same.
1 there aren't any nicknames just the ipad
iPad 1 is very thick iPad 2 is very skinny
1 is not being sold anymore (new) 2 is currently at $399 3 is currently at $499
yes. there is the iPad mini which is 7 inches. and the regular iPad which is 9.7 inches
Generally the iPad 1 can't share the same case with iPad 2 except some specific case design for both ipad, such as the leather Bluetooth keyboard for ipad 1 ipad 2. A slip-style case that is strechy or a generic notebook case will fit both models. Since the iPad 1 is thicker, cases that hold the tablet with leather, metal or other rigid forms will not work. The iPad 1 will not work with the smart cover, or other compatible cases either, as it lacks the magnetic switches and edges.
They now make an iPad 1 iPad 2, iPad 3 But you can not buy the iPad 1 from apple anymore. About 100 million have been sold as of September 2012.
The A1219 in an iPad 1 Wi-Fi. The number does not tell how much memory is installed.Apple updates the technical numbers on its site:https://support.apple.com/kb/HT5452