5 Things You Never Knew Existed but Probably Can't Live Without


What are the things that we see and use every day, but seldom bother to find out just how they work or how they’re built? Let’s take a look at 5 of them.

The Dual Evaporator

Yes, the humble fridge that we all take for granted, but use on a daily basis. Fridges consist of two major components: an evaporator coil and a condenser coil. A liquid coolant goes through these coils with a motor and a compressor. The coolant is than cooled in the condenser and passes to the evaporator. Once the coolant has reached the evaporator, it cools the air that comes in contact with the coolant filled coil. An evaporator coil is inside the housing of the fridge, while the condenser is located at the back of the unit.

The Float Valve

Next we have the float valve, which resides in that thing called a cistern (water tank) in every bathroom where there’s a toilet. Float valves in a cistern play a major role in the prevention of the overflow of water. Float valves regulate water flow in the toilet. When the water level in the cistern drops after a flush, the float valve inside it also drops, then a valve opens and water starts to refill the tank. As the water rises, so does the float device and as the water level reaches a certain height, the valve shuts off and the water is then stopped.


A re-bar is short for a “reinforcing bar”, which is a steel bar or reinforced steel mesh used as a tension mechanism in reinforced concrete and reinforced masonry structures. A re-bar is extremely important in construction because it holds and strengthens the concrete in a consolidated form, which solidly strengthens all kinds of buildings. For top quality rebar in Australia, Best Bar are a top quality and renowned company to suit all your needs. The Re-bar's exterior is also usually patterned to form a better binding with the concrete, thus even further enforcing the strengthening of the re-bar.

Inert Gases

No doubt you’re wondering what this is about! Inert gases? No, nothing to do with your body, but the humble light bulb. Unseen within a light bulb are inert gases usually formed of argon and/or nitrogen. These two low-pressured gases block the filament inside a light bulb from burning out and aid the light bulb's airless environment from compression.

Heat Sink

We’re talking computers here and should you be using one to read this, it’s in there right now.  The CPU produces heat that is thermally transferred to the heat spreader on the CPU, then the heat spreader spreads the heat load over a large surface. There are different kinds of heat sinks, standard fin, heat pipe, and water blocks. These devices are used to transfer the heat from the heat spreader to a dissipation point. Since air itself is a poor heat conductor, a thermal compound is used to fill the air gaps between the heat spreader and the heat sink, which then reduces a heat build-up. An air cooled heat sink transfers the heat to cooling fins and the fan forces cooler air over the fins picking up the heat and pushing it away from the heat source.
So there you go, from reinforced steel mesh to toilets to light bulbs. You’ll never look at those 5 everyday object in the same way ever again.

What would you do without them? 

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