What Gadget you are getting this Holiday?

View Results

Loading ... Loading ...
1 Star2 Stars3 Stars4 Stars5 Stars (Rate This)
Loading ... Loading ...

Do you ever wonder how the gun silencers we see in movies actually work? Well, the technique has to do with dealing with hot gas. Learn about the technology behind the devices.

When a cork pops out of a champagne bottle, a lid pops off an over-heated jar, or a bullet shoots from a gun; they all result in a sound. High pressure gas is released so suddenly that we can hear the waves of pressure it makes as the waves travels through the air.

Sparkling wine is bottled under pressure. Jars lids pop off because the air inside them heats and expands. A bullet explodes from a gun when gunpowder behind the bullet is ignited. It burns and releases gases violently and quickly. The bullet is the “lid,” sitting between the gases and the easiest point of exit from the gun barrel, and so it shoots out into the air. The gas behind it crashes into the air, making the ‘bang’ that most people associate with gunshots.

Silencers, or “suppressors,” are all about finding ways to reduce the speed, volume, and temperature of that gas. They do so using various structures. One structure is just large chamber attached to the end of the gun barrel. This gives the expanding gas somewhere to expand into. It’s a little foyer that some of the gas can mill around in, instead of shooting all of it out of the gun at once. Another is a series of small chambers, almost a honeycomb made of metal. The many chambers make the flow of gas choppy, interrupted by diversions. The honeycomb also makes the gas flow over a large, metal surface area. Metal absorbs heat very well. All the heat that goes into the metal comes out of the gas. Since heat makes gas expand, losing some heat will make it contract. That contraction means less pressure, and that means less of a bang.

But not none of a bang. When most guns fire, they create not one bang but two. The first is the expanding gas. The second is a sonic boom as the bullet breaks the sound barrier. There isn’t anything a silencer can do about that.

How gun silencers really workSome silencers, specifically the ones in movies, can’t do anything about either. Many movie silencers are just objects jammed on the end of the gun. Sometimes they’re solid, like potatoes, or sometimes they’re filled with things that supposedly are going to muffle the sound.

In the 2007 film Shooter, a silencer was made out of a can filled with socks. It would have been better if the socks had been left out, since all they would do was take up space that the gas could have expanded into. Most packing materials are useless.

The one packing material that can be helpful when making a silencer, is metal. It won’t allow the gas to expand, but it can soak up some extra heat. Steel wool, wire, filings, anything that can suck some heat out of the expanding gas.

Anyone hoping to become an assassin, one truly recession-proof job, is out of luck, though. Suppressors are a less popular term than silencer, but they’re a more accurate one. Many sites compare a suppressed gunshot to the sound of a door slamming, or a car backfiring. They can’t silently crumple a look-out while an enemy camp is asleep. The most they can do is make people in a fairly noisy area, not too close to the gun, not immediately recognize the sound as gunfire. So, if stealth is a factor, better pack a crossbow.

Source: Gizmodo.


You Can Use A Dab Of Vaseline On Your Lens To Take Vintage Style Pictures

Fujitsu LifeBook T580
You can also press the left/right arrow key on your keyboard to go to previous/next post
  On August 29, 2010(4 years, 0 months ago.)

Recent Products

Buy Now | Compare  
Buy Now | Compare  
Buy Now | Compare  
Buy Now | Compare  
Compare  

What Do You Think?

Loading Disqus Comments ...
Loading Facebook Comments ...

Recent Search

Recent Tutorials

The trick will let you to check your Facebook messages in the original app without downloading Messenger and it works with both iPhone or Android phone.
Want to block all disgusting ads from your android device? Read the tutorial to know how you can block ads on your Android and save data.
Want to repair your memory card? It's very easy to fix corrupted or damaged memory card. In fact you can fix it by yourself.
Are you the one who is frustrated because of the speed of your Android device? No worries, the article will help you increase the speed of that device.
Lately, Google has updated its Google Docs. Now users can crop, rotate, and add borders to images in a document without leaving Google Docs.
Adobe CS products are not free, but the good news is you can now download Photoshop CS2 & all other CS2 product completely free and it's absolutely legal.
At the beginning level, many people don't know how to use Gmail properly. For them, a here's a helpful guideline.
Skype now allows you to call directly from your Outlook account. Find the step-by-step installation process from this tutorial.
This tutorial helps you quickly resolve four of the most common problems that occur with Windows XP.
After releasing Look Back, many people didn't like it. So Facebook planned to add an Edit tool to the feature and now you can edit your Facebook Look Back video.
Close You Have To Login
User:
Pass:
Login With »Login With TwitterLogin With Facebook