Electronic Billing is a service which enables people to receive account statements over the web and to submit payments online using an electronic interface with a credit card company network. Notification is done by email each time a new statement is issued. It can directly be linked into for filling information and submitting payments. Since [...]

Early solar sails were much too heavy for designing a practical solar sailing vehicle. Materials need to be lightweight and highly reflective while being able to tolerate extreme temperatures. The giant sails currently being tested are made of very lightweight, reflective materials that are more than 100 times thinner than an average sheet of stationery. [...]

Dots Per Inch (DPI) is not the same thing as Pixels Per Inch (PPI) although there are many instances wherein these two terms are interchangeably used. Many print shops, graphic artists and magazines get it wrong when they talk about required digital photo resolution, mistakenly considering DPI when it’s PPI they really want. In reality, [...]