3D flicker can occur when active glasses are not properly synchronized with the television. Making sure they are properly paired with the television will fix the problem. Later 3D televisions have largely overcome this issue.
image-Image Size
So that the image downloads quicker in your browser. File size is important in web design and every element of your page has a file size which adds to total download time.
jpg (JPEG) is an image-file format. It is a style of compression readable by almost every computer nowadays. It supports a maximum image size of 65535×65535
Size and weight
In Photoshop go to Image > Image Size.
That depend on resolution. Open image in Photoshop and go to Image > Image Size. Pixel dimensions you can see on the top of Image Size window.
What size print will an image that is 7.8 MP?
You can enlarge image in Image Size dialog in Photoshop, Image > Image Size. At top of window you will see current/new size in bytes. When you enlarging images be aware because you can loose quality.
Go to Image > Image Size and type numbers or choose Percentage and type percentage in Height or Width fields at top of Image Size window.
From Image > Image Size you can resize picture size to its half.
compression ratio=uncompressed image size/compressed size
image compression makes the image smaller in order to fit a desired size. you literally compress the image and make it smaller in bit size.