The unit 'gsm' stands for 'grams per square meter', which means that a 130 gsm paper is heavier than an 80 gsm paper. Whether the 130 gsm is thicker depends on the type of paper. However, 130 gsm of the same paper stock would obviously be thicker.
A4 130gsm paper is thicker than A4 80gsm paper. The weight of paper is measured in grams per square meter (gsm), so higher gsm indicates a thicker and heavier paper.
130gsm thick
Approximately 5 grams. Most 'standard' A4 paper is 80gsm - which means 80 grams per square metre, There are approximately 16 A4 sheets to a square metre.... 80 divided by 16 equals five.
A4 paper is 210X297 mm so each sheet is 0.06237 m2 multiply that by 80 grams m2 it comes to 4.9896 grams a sheet. Say 5 grams. 2 x reams (1000 sheets) weighs about 4.5kg so each sheet is 4.5g
One tonne of paper is equal to 200, 000 sheets of A4 paper. (A number of sites report that it is equal to 40,000 sheets, but simple maths shows they are incorrect: Given...1 A4 page of 80gsm (gsm: Grams per Square Metre) 1m2 = 16 x A4 sheets So... 1 A4 sheets = 80g/16 = 5grams 1 tonne = 1,000,000grams Hence... 1 tonne = 1,000,000/5 A4 sheets = 200,000 A4 sheets)
Paper is measured is grams per meter square. A standard sheet of A4 size is 80 grams per metre square. Thus a standard A4 sheet weighs 5g. The 'heavier' the paper the thicker it is.
It depends what density of A4 paper you were using. At above 60 gsm you would see not very much. However at 60 gsm A4 paper is getting thin enough (like tissue paper) to be slightly transparent and so allow an image possibly to be seen. Tissue paper is used as it is thin enough to be transparent enough to see the projected image. If you were to make your pin hole camera a camera obscura - a box big enough for you to physically get inside - you could use a piece of ordinary 80gsm A4 paper onto which to project the image from the pin hole and view it from the same side as the pin hole: in this case the light does not need to penetrate the paper "screen" to be viewed and so thicker, non-transparent paper can be used. The camera obscura was used in this way with the occupant tracing the image projected onto their paper to create a good drawing of the scene they wanted to draw.
You did not mention paper size, so I am assuming A4 which is 29.7cm * 21cm Area of 1 sheet = 29.7cm * 21cm = 623.7 cm^2 = 0.06237 m^2 Area of 500 sheets = 0.06237 * 500 = 31.185 m^2 80gsm means 1 sq metre (m^2) of the paper weighs 80g Since the total area of 500 sheets is 31.185 m^2, so 500 sheets weigh = 31.185 * 80g = 2494.8g = 2.4948kg
A4 paper size is 8.3in × 11.7in.
8 A4 peices of paper and a third
The width and height of ISO A4 paper is 210 × 297 mm.
A4 paper measures 8.27 x 11.69 inches.
European size paper