Everyday we wake up we see certain things around us but most times we do not know the reason why they are there and why they were made so. Here are some facts about things we see around us :
1) Black Stripe On School Buses :
Black stripes on yellow school buses aren't an element of design they're actually metal rails put along the sides and the back of the bus to protect its rather thin walls in case of a collision. They absorb most of the impact should it colide with another vehicle.
These rub rails are also positioned in strategically important spots,
the lowest one runs at the floor level, the middle one matches the bottom of the
seats and the top one corresponds either to the top of the seats
or the bottom of the window.
2) Ceiling Fans : 
your ceiling fan can move in more than one direction for a reason; one is for summer the other for winter.
When the weather is hot ceiling fans should move counter clockwise this makes
the blades pull the warm air up and push the cold air down and the clockwise
winter mode moves the warm air down and raises the cool air.
3) Toothbrush : 
If you notice that the blue bristles on your toothbrush has start fading,
it's a sure sign it's time to replace it.
4) Staplers : 
You can adjust your stapler so that it staples documents together only temporarily.
It is done by rotating the crimp area. Most staplers have two options for
stapling, one is standard, but the other side bends staples away from the center.
Later when you don't need them anymore, you can easily remove them by hand.
5) : Ovens : 
The main purpose of the drawer under your oven isn't to store all those pots
and pans, you're supposed to use this place to keep your food warm
while something else is being prepared in the oven.
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