because it is focused on a straight way and it cannot change its direction
A cylinder would seem to fit the given description.
The flashlight shape is always in tube body, which is easier to held by hand and put in batteries.
If you refer to a flurecent tube you need to check the starter if it has one (small round tube in the side of the light), check the fuse box for that light, check the switch for that light and check that the tube youve banged about has not also blown i.e. check in another tube socket if possible
tube light woks like a tube light....
tube light woks like a tube light....
In general, a round tube is stronger than a square tube because it distributes stress more evenly along its circumference.
The different shapes of light bulbs available in the market include A-shape, globe, candle, reflector, and tube.
tube light
tube light
tube light
so that there is a linear relationship between the flow rate and position in the float within the tube.
A tube is a hollow cylinder.