Health Dangers from Display Screen Blue Light

Recent studies have shown that the blue light emissions from displays and screens. (see the article from Harvard Universaty link below)

http://www.health.harvard.edu/staying-healthy/blue-light-has-a-dark-side

Basically, the blue emissions affect chemicals in the brain which stop you from sleeping. This means that we have to have about 2 or 3 hours of blue light free time before going to bed. However that is a disaster for our new gadget way of life. Not being able to use our phone, tablet, computer NO..NO IMPOSSIBLE....SO, if you are having trouble sleeping.......PUT THAT PHONE DOWN!.....

Relax, there is an answer,  f.lux (www.justgetflux.com)  is a piece pf software which removes the blue component from your computer on a schedule set by you. 

JPEGs and PDFs

Working with JPEGs and PDFs - Getting your messages out there

First a couple of definitions:

JPEG stands for 'Joint Photographic Experts Group', which is the name of a body which set the standard on how a photograph is compressed and stored. 

PDF stands for "Portable Document Format" which is a format where files are presented independently of any particular application software or system. 

Both of these formats have their own particular use and features. It is useful to understand how and where these types of files can be used. 

JPEG's can be uploaded to Facebook, just like any other photograph, where as PDF's cannot. So if you have just created a poster for an event in WORD then a conversion to JPG is needed to get your message on your Facebook page. 

PDF's can be used to send via email as all computers usually (I say usually!) have a PDF Reader such as ADOBE ACROBAT, or PDF Gear, So everyone can read the poster you have just sent. What about if my poster is in WORD you ask? Yes you can send it in WORD format, but if you have used any non standard FONTS which you recipient does not have, then to poster may not look as you would like it and there is no way to tell beforehand. 

So converting to and sending in PDF is the best way to distribute your message. Some of the PDF software allows you to convert to and from PDF to many other formats. Have a search on the web. Although, If you display your WORD doc or PDF on your screen, the Snip & Sketch Tool can create a JPG for you. Snop & Sketch is in the Windows apps menu, but an easy way to access this is to use the shortcut  WIN + SHIFT + S  Keys.