Problem: Write an article based on this summary: Learn about wave function.

Answer: A wave function or wave function is a mathematical tool in quantum mechanics that describes the quantum state of a particle or system of particles. It is commonly applied as a property of particles relating to their wave-particle duality, where it is denoted (position,time) and where ||2 is equal to the chance of finding the subject at a certain time and position. For example, in an atom with a single electron, such as hydrogen or ionized helium, the wave function of the electron provides a complete description of how the electron behaves. It can be decomposed into a series of atomic orbitals which form a basis for the possible wave functions. For atoms with more than one electron (or any system with multiple particles), the underlying space is the possible configurations of all the electrons and the wave function describes the probabilities of those configurations. In solving homework problems involving the wave function, familiarity with complex numbers is a prerequisite. Other prerequisites include the math of linear algebra, Euler's formula from complex analysis and the braket notation.

Problem: Write an article based on this summary: Go to the Box website. View the file attachments.

Answer: Return to the Box website. Log in again if you were logged out for some reason. You can now see all the file attachments you've forwarded to this folder. From here, you can do whatever you want with the files, similar to how you manage your other files on Box.

Problem: Write an article based on this summary: Buy from your eye doctor if you want the easiest process. Buy from a big-box retailer if you want a good deal. Buy online if you want more choices. Buy from an optical chain if you are in a hurry.

Answer: Getting your contacts direct from your optometrist essentially cuts out the middle man. They know your medical history, so they'll also be able to ensure that you receive the exact contacts that you need. And, doctors will generally only sell contacts from reputable companies. However, it's possible that contacts purchased from your doctor may be pricier. This is partially because doctors usually don't buy contacts in bulk for resale. Large retailers, such as Sam's Club, can often offer you a cheaper price on contacts via savings programs and buy-in-bulk deals. However, they may not offer the widest selection and the ordering process can vary in customer service. If your contacts brand is hard to find or if you have an unusual prescription, then online ordering might be a good option. You can usually search around and find a website that is willing to offer a competitive price, especially if you buy in bulk. However, make sure that you only buy from a reputable site that sells quality goods. To check on a site, make sure to read reviews and to pay attention to any comments on government sites or the Better Business Bureau. Many larger optical companies, such as Pearl Vision, carry stocks of contact lenses in their individual stores. This means that you can usually walk in, present a prescription, and walk out with a supply of contacts almost immediately. Some of these locations even offer extended hours to make buying easier. Buying from a well-known chain can also give you some peace of mind if you would like the option of easy returns. A possible drawback is that many optical chains carry a limited selection of contacts in stock.

Problem: Write an article based on this summary: Open a Microsoft Excel document. Click the Review tab. Click Protect Sheet. Enter a password. Re-enter your password. Click OK. Save your changes.

Answer:
Double-click the Excel document that you want to open. It's at the top of the Excel window. A toolbar will appear below the Review tab. It's on the right side of the Review tab's toolbar. Doing so will open a new window. If you want to password-protect all pages in the Excel workbook, click Protect Workbook' instead. Type your preferred password into the "Password" text field. When the "Verify" text box appears, re-type your password into it. Your password entries must match each other. It's at the bottom of the window. This will close the password window. Press Command+S to do so. Your PowerPoint presentation will now require a password in order to open. Your document will remain encrypted if you send it to someone, so they'll need to know the password in order to open the document.