Do you know your lanthanoids from your actinoids? What about ununbium versus ununtrium?
Webelements, "the periodic table on the web", offers an extensive amount of information about all of the elements, including basic background information on each element and, in some instances, the history behind their formation. You'll find element uses (such as hydrogen in rocket fuel and silicon that's very important to what you're typing on), element photographs, crystal structures, compounds of elements, and much more.
There's also a store where you can purchase a periodic table poster, a card game, socks, shirts, mouse mats, mugs, ties (a real conversation-starter at parties), and samples of particular elements.
(MalekTips has information on another website where |
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When sending an important message in Outlook Express in Windows XP, you can request a read receipt for said message. This way you can help ensure your e-mail reached its destination and was read, even if it has not been responded to yet.
Note that while read receipts may be a good idea for certain messages, receiving this notification is not guaranteed. Your recipient may use non-Microsoft software that does not support read receipts. Also, e-mail users with Outlook, Outlook Express, and Windows Mail can configure their software to never send receipts or ignore particular requests.
To request a receipt anyway, when composing an e-mail message, select the "Tools" menu and check "Request Read Receipt". This will check the menu item. You can remove the receipt request f |
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Outlook Express in Windows XP plays a sound whenever new e-mail arrives. This is useful if you are multitasking; instead of keeping track of the Outlook Express window, you can work on other software and know by a sound whenever you need to check your Inbox.
There are some circumstances, however, where you do not want to hear when new messages arrive. For example, you may be listening to music or playing a game and may find the sound distracting. Thus, it can be disabled:
1. Click the "Tools" menu, selecting "Options".
2. The "Options" multi-tabbed dialog box appears. Make sure the "General" tab is selected.
3. Underneath "Send / Receive Messages", uncheck "Play sound when new messages arrive".
Disabling audio notifications when |
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As you download files in Mozilla Firefox, the Download Manager (accessible via "Tools" - "Downloads") records a list of these files. This way, you can easily find and open files recently downloaded from websites, especially useful if you download files to multiple folders and forget where you place them.
For privacy reasons, especially if you share your computer with others, you may want to clear this list. Or, you may not ever want to keep a record of these files in the browser.
To temporarily clear this list:
1. Click "Tools" - "Options".
2. When the "Options" dialog box appears, click "Privacy".
3. Next to "Ask me before clearing private data", click the "Clear Now" button.
4. The "Clear Private Data" dialog box appear |
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Depending on your configuration, Windows Vista may hide the file extensions of known file types in Explorer views. The reason for this is to "clean up" the display of files, as often the file icon signifies the type of file anyway.
Unfortunately, this configuration is a potential security risk. For example, it is possible that a filename that looks like it ends with ".txt", or a filename with an icon that looks like a notepad icon, actually has a hidden OTHER extension. If you double-click what you think is a simple text file, you may actually run malware instead!
For example, look at the screenshot to the right. It looks harmless enough - a text file you may have received via an e-mail message labeled "Celebrity Picture URLs.txt" - containing what yo |
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