Is a snooker ball smoother than the earth?

If you measure across the Equator it's 12,756.2 km, a difference of about 42.6 kilometers. Uh-oh! That's more than our tolerance for a billiard ball. So the Earth is smooth enough, but not round enough, to qualify as a billiard ball.

Is the Earth smoother than a cue ball?

Therefore, it would appear that a pool ball (even the worst one tested) is much smoother than the Earth would be if it were shrunk down to the size of a pool ball. However, the Earth is actually much smoother than the numbers imply over most of its surface.

What is the surface roughness of a billiard ball?

Since the radius of a pool ball is about 28560 microns, the “local” roughness observed is about 1/30000 or about roughly 30 parts per million.

Are snooker balls heavier than pool balls?

Pool balls are slightly larger and heavier than those used in snooker. Where snooker balls are around 52.5mm in diameter, pool balls are around 57mm; snooker balls generally weigh around the 140g mark and pool balls are approximately 160-170g.

What are snooker balls made of?

What snooker balls are made of? Modern snooker balls are made with cast phenolic resin, a light plastic resin, which gives a lot more control, compared with previous materials used, such as clay and ivory.

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Are snooker balls smooth?

OK, first, how smooth is a billiard ball? According to the World Pool-Billiard Association, a pool ball is 2.25 inches in diameter, and has a tolerance of +/- 0.005 inches. In other words, it must have no pits or bumps more than 0.005 inches in height. That's pretty smooth.

Are snooker balls different?

Snooker balls are a bit smaller than pool balls at about 5.3 cm, whereas the pocket size is 9 cm, which makes potting a snooker ball more difficult than a pool table in general. The profile of the cushions and the material from which they are made also differ between snooker and pool.

How much are snooker balls worth?

The game is played with 22 balls, made up of one white ball (the cue ball); 15 red balls, valued at 1 point each; one yellow, 2 points; one green, 3; one brown, 4; one blue, 5; one pink, 6; and one black, 7.

Are snooker balls hollow?

Billiard balls are not hollow. They must be solid because they need to be similar in weight, density, and physical properties. In addition, these material properties will provide various advantages to pool balls, like toughness, durability, balance, predetermined shots, and many more.

Do snooker balls have different weights?

Snooker balls are standardized at 52.5 mm (21⁄16 in) in diameter within a tolerance of plus or minus 0.05 mm (0.002 in). No standard weight is defined, but all balls in the set must be the same weight within a tolerance of 3 g (0.11 oz).

What is the roughness of the Earth?

The term 'roughness' permeates the Earth Sciences. The broad concept of roughness is fundamental to the study of many Earth surface processes (Lane, 2005) and is commonly used to describe sub-grid scale topography. Here the importance of roughness across the Earth Sciences is summarised briefly.

Are billiard balls perfectly round?

These balls are machined to appear round and to approach perfect roundness. Their shape, however, is not guaranteed to be perfectly round. There is a tolerance for error that is allowed in the interests of saving costs during manufacturing.

What is the size of the Earth ball?

Several different ways of modeling the Earth as a sphere each yield a mean radius of 6,371 km (3,959 mi). Regardless of the model, any radius falls between the polar minimum of about 6,357 km (3,950 mi) and the equatorial maximum of about 6,378 km (3,963 mi).

Is the Earth wobbling more?

Earth is accelerating

Since 1960s scientists have observed three epochs of ups and downs with gaps of about 20 years between them. However, the trend is for increased speed. “In each of the epochs it rotates quicker and quicker,” said Zotov.

Does the Earth spin smoothly?

It spins (rotates) at a speed of about 1,000 miles (1600 kilometers) per hour and orbits around the Sun at a speed of about 67,000 miles (107,000 kilometers) per hour. We do not feel any of this motion because these speeds are constant.

Is the Earth a perfect ball?

Even though our planet is a sphere, it is not a perfect sphere. Because of the force caused when Earth rotates, the North and South Poles are slightly flat. Earth's rotation, wobbly motion and other forces are making the planet change shape very slowly, but it is still round.

Why not use a snooker cue in pool?

Whilst English pool and Snooker cues offer more in the way of control and precision, they are not cut out to the vastly increased weight and forces experienced when playing with the larger and heavier 2 1/4" cue balls used in American pool.

What is an illegal snooker?

The right hand red ball is stopping (arrowed) from making the finest cut possible on the right hand side of the yellow ball. This situation IS a "foul snooker" to the player on yellows. You cannot be snookered on an object ball if the cue ball is touching that object ball.

Can you break a snooker ball?

anything including a billiard ball can have flaws in it that under stress can break it. the odds are it was a flaw and not an incredibly powerful break.

What is snooker called in America?

American snooker is a cue sport played almost exclusively in the United States, and strictly on a recreational, amateur basis.

What is the 3 miss rule in snooker?

Failure to hit a ball "on" three times in a row, if the player has a clear sight of the ball. The referee will warn a player after a second such miss that a third miss will mean that the opponent will be awarded the frame. This rule does not apply if the player is snookered.

Are snooker balls painted?

Each ball is made of a different coloured resin, so the process has to be repeated eight times to make a complete set of snooker balls. Once the balls have set solid, the moulds are removed and they are put through a lathe that smoothes out imperfections and finishes the balls to perfect spheres.

What's harder snooker or pool?

Snooker tables are much bigger than pool tables, so are snooker players much more skilful than pool players? The best pool players are very skilful but I'd argue that snooker is harder, given the size of the table.

Why do they clean snooker balls?

Chalk from the pool cue powders the cue ball. During its travels, some of that chalk falls onto the table. Consequently, object balls collect this debris and transport it during gameplay. Such chalk is abrasive and can damage the table.

Why is snooker so much harder than pool?

The balls are smaller, the pockets are smaller and the tables are bigger. All of these make doing whatever it is you're trying to do more difficult.