Sarah, full HD does exist, on Blu Ray and HD DVD disks running at 1080p... TV channels though don't broadcast at this rate.
As for difference in picture, I've got a PS3 and HD TV and I personally cannot tell the difference between a Blu Ray film and an upscaled DVD. You can see the difference between a Blu Ray/Upscaled DVD and an SD DVD though. Then again I've got a crappy 27" LCD which only goes to 720p so...
As for H's, yargnad, you are correct a "an" is used to preceding a word beginning with a vowel, but it is also used in a number of smaller cases preceding a word beginning with another letter. H for example. Like in "an historic event", the H is silent and historic should be pronounced 'istoric.
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....and we're supposed to know this stuff...
Sarah, full HD does exist, on Blu Ray and HD DVD disks running at 1080p... TV channels though don't broadcast at this rate.
As for difference in picture, I've got a PS3 and HD TV and I personally cannot tell the difference between a Blu Ray film and an upscaled DVD. You can see the difference between a Blu Ray/Upscaled DVD and an SD DVD though. Then again I've got a crappy 27" LCD which only goes to 720p so...
As for H's, yargnad, you are correct a "an" is used to preceding a word beginning with a vowel, but it is also used in a number of smaller cases preceding a word beginning with another letter. H for example. Like in "an historic event", the H is silent and historic should be pronounced 'istoric.