No and HD DVDs have been discontinued
Yes
The advantages of owning a Sony Blu-Ray player is the ability to buy Blu-Ray DVDs which have a higher quality of sound and image than HD-DVDs. Although, they can be more costly.
Yes, it plays blu-ray and regular dvds.
No
No, you can't play blu-ray discs on a DVD player. You can however play DVDs with a blu-ray player.
To my knowledge, you can only play blu-ray dvds on a blu-ray player.
Yes, Blu-Ray players can play regular DVDs.
All Blu-Ray players can play DVDs
No. Blu-Rays will only work on a Blu-Ray player, but they can play DVDs as well
No. You can play regular DVDs with a blu-ray player.
Only blu-ray disc players will play blu-ray discs. These will also play standard DVDs.
No. Blu-Rays were designed to play DVDs just as well as actual Blu-Ray discs