How to: Change your IP in less than 1 min

1. Click on "Start" in the bottom left hand corner of screen
2. Click on "Run"
3. Type in "command" and hit ok

You should now be at an MSDOS prompt screen.

4. Type "ipconfig /release" just like that, and hit "enter"
5. Type "exit" and leave the prompt
6. Right-click on "Network Places" or "My Network Places" on your desktop.
7. Click on "properties"

You should now be on a screen with something titled "Local Area Connection", or something close to that, and, if you have a network hooked up, all of your other networks.

8. Right click on "Local Area Connection" and click "properties"
9. Double-click on the "Internet Protocol (TCP/IP)" from the list under the "General" tab
10. Click on "Use the following IP address" under the "General" tab
11. Create an IP address (It doesn't matter what it is. I just type 1 and 2 until i fill the area up).
12. Press "Tab" and it should automatically fill in the "Subnet Mask" section with default numbers.
13. Hit the "Ok" button here
14. Hit the "Ok" button again

You should now be back to the "Local Area Connection" screen.

15. Right-click back on "Local Area Connection" and go to properties again.
16. Go back to the "TCP/IP" settings
17. This time, select "Obtain an IP address automatically"
tongue.gif 18. Hit "Ok"
19. Hit "Ok" again
20. You now have a new IP address

With a little practice, you can easily get this process down to 15 seconds.

P.S:
This only changes your dynamic IP address, not your ISP/IP address. If you plan on hacking a website with this trick be extremely careful, because if they try a little, they can trace it back

Discover new music you love

First off, I've been doing this for a long time now. I still listen to a lot of the bands I've found by doing this. It's really simple, but it works like a charm. I ALWAYS find cool new stuff -- sometimes even bands that have been around 10 years that I never heard of.

The things you need:
- (Optional) A file sharing program (I use limewire)
- A browser. :]

1.) Pick one of your favorite bands.
2.) Go to amazon.com or cdnow.com (same thing)
3.) Look up that band's name
4.) Scroll down until you see "Customers who bought this title also bought:"
5.) Browse through the artists you've never heard of in that list.
6.) Check out one of their albums, preferably the one with highest rating (in stars)
7.) Either listen to the samples on amazon or download a song by them with your filesharing app.

If you like what you hear, repeat steps 3-7 using the new band's name.

You'll find TONS of new music you never thought existed.

It's a really simple way to find stuff, and I'm sure lots of you probably already do this. But for those who don't -- you'll thank me later. It works wonders. :)

Create One-Click Shutdown and Reboot Shortcuts

First, create a shortcut on your desktop by right-clicking on the desktop, choosing New, and then choosing Shortcut. The Create Shortcut Wizard appears. In the box asking for the location of the shortcut, type shutdown. After you create the shortcut, double-clicking on it will shut down your PC.

But you can do much more with a shutdown shortcut than merely shut down your PC. You can add any combination of several switches to do extra duty, like this:

shutdown -r -t 01 -c "Rebooting your PC"
Double-clicking on that shortcut will reboot your PC after a one-second delay and display the message "Rebooting your PC." The shutdown command includes a variety of switches you can use to customize it. Table 1-3 lists all of them and describes their use.

I use this technique to create two shutdown shortcuts on my desktop—one for turning off my PC, and one for rebooting. Here are the ones I use:

shutdown -s -t 03 -c "Bye Bye m8!"
shutdown -r -t 03 -c "Ill be back m8 ;)!"

Switch
What it does

-s
Shuts down the PC.

-l
Logs off the current user.

-t nn
Indicates the duration of delay, in seconds, before performing the action.

-c "messagetext"
Displays a message in the System Shutdown window. A maximum of 127 characters can be used. The message must be enclosed in quotation marks.

-f
Forces any running applications to shut down.

-r
Reboots the PC.

Digital Photo ID Cards

Digital Photo ID Cards
By Frank White

Q: What do you need to make a Digital Photo ID Card?
A: Making digital photo ID cards typically requires several components all working together.
1. You need a computer on which you run the photo ID badge software. You cannot print the cards on a PVC card printer without a computer – the printer can't perform anything without the computer.
2. You need software and it must:
a) Offer a database to store the names and personal information of the people for whom you want to issue badges.
b) Provide a way to integrate image capture with the database – not only import images, but associate the images with specific database records.
c) Provide a way to design and edit badges.
d) Send badges from the computer to a card printer. Badging software, like other business applications, comes in a variety of "flavors" – from low-end to high-end. That is, in addition to performing the simple processes described above, the application may come with many other "features" which enhance the usability and functionality of the application. Features might include requiring a secure log-on, allowing the user to add, delete, or edit database fields and create or print reports, etc.
3. You need a PVC card printer to print the badges. PVC (polyvinylchloride) is the same material that your white plastic household plumbing pipes are made out of. It is porous enough to allow colored inks to be absorbed into the surface of the plastic using a "dye sublimation" process, yet durable enough to last years. The PVC printer allows you to print a photo ID badge directly to a plastic card. The non-digital process required cutting and pasting an instant photo and inserting it into a laminated pouch which must then be sealed by sending it through a heat laminator.
4. You need a digital camera or other "input" device. Your PC and software must allow you to:
a) Plug in a camera.
b) Capture the image through the software. More versatile systems will allow you to capture portraits through video cameras, digital cameras, scanners, or by importing from a file –an "import from file" feature allows someone to send a picture to you by email as a file attachment, which you can then import into the database.
5. Additional hardware may be required, such as a video capture board for certain video cameras, tape backup device, UPS (uninterrupted power supply), etc. Video capture boards, for example, are installed in a PCI or AGP expansion slot on your PC's motherboard. The camera usually plugs directly into these boards. Special lighting may need to be set up where you take portrait pictures. If you want to incorporate fingerprints and signatures in your database and badge, then additional image capture devices will be required for them.
6. Consumables are also part of the package. You will need blank or pre-printed PVC cards and printer ribbons (usually in rolls which print from 250-350 cards per).

Partitioning Your Harddisk With Fdisk

Partitioning Your Harddisk With Fdisk
Partitioning your HardDisk

Partitioning involves creating logical units on your hard drive that are then addressed as different drive letters. Not only does it help to organize your data (program files on one drive, games on another, documents on another) but also to speed up your PC. This is so because the drive head has to move a lesser distance for accessing data within one partition. You can also have different filesystems and OSs on the same hard drive.

Partitioning can be done using ‘fdisk’ in DOS/Windows 9x or ‘disk management’ in Windows 2000/ NT/XP. We will describe the procedure for fdisk, since disk management is GUI driven and the basics otherwise remain the same. While several other commercial packages like Partition Magic are available, these utilities (fdisk, computer management) are bundled with their respective OSs. You need a bootable floppy with fdisk.exe, format.com, and sys. com utilities. Before starting, decide how many partitions you want to create and their sizes. You can create one primary and one extended partition using the DOS fdisk. The extended partition can then have multiple logical partitions. Boot your machine using the bootable disk, and do the following.

Run fdisk. The utility will show you a numbered menu from where you can create, view, or delete partitions
The utility first asks you whether you want to enable large disk support. Type Y (for yes) and press enter if your hard-drive capacity is more than 4 GB. Large disk support creates a FAT32 partition, which can be greater than 2 GB
Select the first option from fdisk menu to create a primary partition. Specify the partition size in megabytes or percentage size when prompted for it
Similarly, create an extended partition. Extended partitions by themselves do not appear as drive letters. Instead, logical partitions must be created in them, which are then assigned drive letters
Exit fdisk and reboot the computer
Fdisk automatically assigns drive letters to all the partitions. You’ll need to format each partition in order to use it. Use format.com for the same
Your hard drive is now ready for taking an OS.

Reinstalling Internet explorer 6

Microsoft Windows XP won't allow you to uninstall Internet Explorer. How can you fix the browser or even reinstall the program if it becomes corrupt?


If you don't yet have the very latest Internet Explorer, you can fix many problems by visiting

http://windowsupdate.microsoft.com

and updating to the latest version. If you're already up to date, however, the site won't let you reinstall the program. You need to fool the system into thinking you don't have the latest version.


Launch REGEDIT from the Start menu's Run dialog and navigate to the key HKEY_LOCAL_MACHINE\SOFTWARE\ Microsoft\Active Setup\Installed Components\{89820200-ECBD-11cf-8B85-00AA005B4383}. In the right-hand pane, double-click on the DWORD value IsInstalled and change it from 1 to 0 (no matter whether you choose Decimal or Hexadecimal). Close REGEDIT and go to the Windows update site again. Now it should let you "update" IE and, with luck, fix the problems.

By the way, you can do the same thing if you need to repair Outlook Express, but at the key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{44BBA840-CC51-11CF-AAFA-00AA00B6015C}.

Nokia mobiles phone codes

On the main screen type in:

*#06# for checking the IMEI (International Mobile Equipment Identity).

*#7780# reset to factory settings.

*#67705646# This will clear the LCD display(operator logo).

*#0000# To view software version.

*#2820# Bluetooth device address.

*#746025625# Sim clock allowed status.

#pw+1234567890+1# Shows if sim have restrictions.

*#92702689# - takes you to a secret menu where you may find some of the information below:
1. Displays Serial Number.
2. Displays the Month and Year of Manufacture
3. Displays (if there) the date where the phone was purchased (MMYY)
4. Displays the date of the last repair - if found (0000)
5. Shows life timer of phone (time passes since last start)

*#3370# - Enhanced Full Rate Codec (EFR) activation. Increase signal strength, better signal reception. It also help if u want to use GPRS and the service is not responding or too slow. Phone battery will drain faster though.

*#3370* - (EFR) deactivation. Phone will automatically restart. Increase battery life by 30% because phone receives less signal from network.

*#4720# - Half Rate Codec activation.

*#4720* - Half Rate Codec deactivation. The phone will automatically restart

If you forgot wallet code for Nokia S60 phone, use this code reset: *#7370925538#

Note, your data in the wallet will be erased. Phone will ask you the lock code. Default lock code is: 12345

Press *#3925538# to delete the contents and code of wallet.

Unlock service provider: Insert sim, turn phone on and press vol up(arrow keys) for 3 seconds, should say pin code. Press C,then press * message should flash, press * again and 04*pin*pin*pin# \
*#7328748263373738# resets security code.

Default security code is 12345

Change closed caller group (settings >security settings>user groups) to 00000 and ure phone will sound the message tone when you are near a radar speed trap. Setting it to 500 will cause your phone 2 set off security alarms at shop exits, gr8 for practical jokes! (works with some of the Nokia phones.) Press and hold "0" on the main screen to open wap browser.


Code Function
*3370# Activate Enhanced Full Rate Codec (EFR) - Your phone uses the best sound quality but talk time is reduced my approx. 5%
#3370# Deactivate Enhanced Full Rate Codec (EFR)
*#4720# Activate Half Rate Codec - Your phone uses a lower quality sound but you should gain approx 30% more Talk Time
*#4720# Deactivate Half Rate Codec

#pw+1234567890+1# Provider Lock Status. (use the “*” button to obtain the “p,w” and “+” symbols)
#pw+1234567890+2# Network Lock Status. (use the “*” button to obtain the “p,w” and “+” symbols)
#pw+1234567890+3# Country Lock Status. (use the “*” button to obtain the “p,w” and “+” symbols)
#pw+1234567890+4# SIM Card Lock Status. (use the “*” button to obtain the “p,w” and “+” symbols)
12345 This is the default security code

*#21# Allows you to check the number that “All Calls” are diverted to
*#30# Lets you see the private number
*#43# Allows you to check the “Call Waiting” status of your phone.
*#61# Allows you to check the number that “On No Reply” calls are diverted to
*#62# Allows you to check the number that “Divert If Unreachable (no service)” calls are diverted to
*#67# Allows you to check the number that “On Busy Calls” are diverted to

*#0000# Displays your phones software version, 1st Line : Software Version, 2nd Line : Software Release Date, 3rd Line : Compression Type
*#9999# Phones software version if *#0000# does not work
*#06# For checking the International Mobile Equipment Identity (IMEI Number)

*#67705646# Removes operator logo on 3310 & 3330
*#73# Reset phone timers and game scores
*#746025625# Displays the SIM Clock status, if your phone supports this power saving feature “SIM Clock Stop Allowed", it means you will get the best standby time possible
*#94870345123456789# Deactivate the PWM-Mem
press and hold # Lets you switch between lines

*#7760# Manufacturers code
*#7780# Restore factory settings
*#8110# Software version for the nokia 8110
*#92702689# Displays - 1.Serial Number, 2.Date Made, 3.Purchase Date, 4.Date of last repair (0000 for no repairs), 5.Transfer User Data. To exit this mode you need to switch your phone off then on again

**21*number# Turn on “All Calls” diverting to the phone number entered
**61*number# Turn on “No Reply” diverting to the phone number entered
**67*number# Turn on “On Busy” diverting to the phone number entered


Nokia Secret Codes
The complete guide

Here's a list of known codes on Nokia mobile phones. This list does not include codes that make request to the network. To use these codes, just dial them like normal numbers.

Code Description
*#06# Display the IMEI (GSM standard)

*#0000# Display the firmware version and date (with variant info on S40 second edition or newer)

*#9990# Says "Bluetooth Test Mode" on Symbian models; accepts without any messages and Bluetooth behaves abnormally on non-Symbian ones (models with build-in Bluetooth radio, activate first to use)

*#bta0# Display the Bluetooth MAC address (models with build-in Bluetooth radio, activate first to show address)

*#mac0wlan# Display the WLAN MAC address (models with build-in Wi-fi radio)

*#opr0logo# Clear the operator logo (3310 and 3330 only)

*#pca0# Activate the GPRS PCCCH support (early GPRS models)

*#pcd0# Deactivate the GPRS PCCCH support (early GPRS models)

*#res0wallet# Reset the mobile wallet (models with mobile wallet)

*#res0# Soft-format the memory (Symbian models only)

*#rst0# Reset to factory defaults, confirmation required (DCT4 or newer)

*#sim0clock# Display the SIM clock status (DCT3 only)

*#ssn0# Display the manufacturing serial number (mid-range and premium DCT3, basically all DCT4 and BB5 non-Symbian models)

*#war0anty# Display the manufacturing and repair info (no exit on DCT3) or total talk time on

Symbian models

*efr0# Enable EFR encoding (pre-2003 models)

#efr0# Disable EFR encoding (pre-2003 models)

*hra0# Enable HR encoding (pre-2003 models)

#hra0# Disable HR encoding (pre-2003 models)

#pw+1234567890+n# Display the SIM lock status: (pre-2003 models)

n = 1: provider lock
n = 2: network lock
n = 3: country lock
n = 4: SIM lock
n# n = 1..999: recall the number stored in the SIM location n (DCT3, DCT4, BB5 models)


These codes will work on most Nokia Mobile Phones to activate/deactivate advanced hidden functions that you can’t change through the phone menu

One useful function that all Nokia’s I’ve owned have is “Cell Info Display” which can usually be found in the phones “Display settings” (eg: in a Nokia 1600) or “Phone Settings” (eg: in a Nokia 3315)

If your network supports it, when “Cell Info Display” is enabled, it will display the name of the base station your mobile is currently connected to on the screen. eg: when i’m walking around the city it says “Sydney CBD” and when i’m at home it displays the name of my suburb.

Note:

To display “p” press “*” three times within one second, To display “w” press “*” four times within one second, To display “+” press twice “*” within less than a second

Code Function

*3370# / #3370# Activate / Deactivate Enhanced Full Rate Codec (EFR) - Your phone uses the best sound quality but talk time is reduced my approx. 5%

*#4720# / *#4720# Activate / Deactivate Half Rate Codec - Your phone uses a lower quality sound but you should gain approx 30% more Talk Time

*#7220# / *#7230# Enable / Disable PCCCPH support (faster GPRS)


#pw+1234567890+1# Provider Lock Status. (use the “*” button to obtain the “p,w” and “+” symbols)

#pw+1234567890+2# Network Lock Status. (use the “*” button to obtain the “p,w” and “+” symbols)

#pw+1234567890+3# Country Lock Status. (use the “*” button to obtain the “p,w” and “+” symbols)

#pw+1234567890+4# SIM Card Lock Status. (use the “*” button to obtain the “p,w” and “+” symbols)

12345 This is the default security code

*#0000# Displays your phones software version, 1st Line : Software Version, 2nd Line : Software Release Date, 3rd Line : Compression Type

*#9999# Phones software version if *#0000# does not work

*#06# For checking the International Mobile Equipment Identity (IMEI Number)

*#67705646# Removes operator logo on 3310 & 3330

*#73# Reset phone timers and game scores

*#746025625# Displays the SIM Clock status, if your phone supports this power saving feature “SIM Clock Stop Allowed”, it means you will get the best standby time possible
press and hold # Lets you switch between lines

*#7760# Manufacturers code

*#7780# Restore factory settings

*#8110# Software version for the nokia 8110

*#92702689# Displays - 1.Serial Number, 2.Date Made, 3.Purchase Date, 4.Date of last repair (0000 for no repairs), 5.Transfer User Data. To exit this mode you need to switch your phone off then on again

How to: Retrieve data from hard disc 1

Dead disk drives?

There's a bunch of steps I would take if the drive weren’t being recognized by either the auto setup or manual entry.

1) Check your Master/Slave/Standalone jumper settings and make sure they are correct and don't conflict with another device on the same IDE channel.

2) Check for bent pins on the connectors.

3) Try a known good cable—Floppy and IDE cables often seem to go down the gurgler at the worst possible time for some unknown reason.

4) Try a known good drive on your IDE channel and check the channel. If it doesn't respond:· Try another IDE port (if there's two)· Disable onboard IDE and try another I/O card (one that’s known to be good of course)

5) Try the disk in another PC.

6) Here's where it starts getting tricky. By now you must be reasonably convinced you have a bad case of galloping disk rot. On some drives (not all), if you have an identical same model drive, you can swap over the logic board. This will let you know if it is the embedded controller on the logic board. With luck, your disk will roar into life and you can suck the data off onto somewhere safe.

7) If your disk is making a hideous noise like a peg-legged man with a vacuum cleaner on a wooden floor (whirrr, clunk, whirrr, clunk....), then it is likely you have a dropped head. This is where you have start making decisions about how much your data is worth, because to go any further is going to cost big time and may require factory technicians to try and repair the disk in a clean-room environment. If your data was that important, then it would have been backed up. (Of course it would have been, they all respond in loud voices).

Facts: Internal organs

Internal Organs

Though we may not give them much thought unless they’re bothering us, our internal organs are what allow us to go on eating, breathing and walking around. Here are some things to consider the next time you hear your stomach growl.

1. The largest internal organ is the small intestine. Despite being called the smaller of the two intestines, your small intestine is actually four times as long as the average adult is tall. If it weren’t looped back and forth upon itself it wouldn’t fit inside the abdominal cavity.

2. The human heart creates enough pressure to squirt blood 30 feet. No wonder you can feel your heartbeat so easily. Pumping blood through your body quickly and efficiently takes quite a bit of pressure resulting in the strong contractions of the heart and the thick walls of the ventricles which push blood to the body.

3. The acid in your stomach is strong enough to dissolve razorblades. While you certainly shouldn’t test the fortitude of your stomach by eating a razorblade or any other metal object for that matter, the acids that digest the food you eat aren’t to be taken lightly. Hydrochloric acid, the type found in your stomach, is not only good at dissolving the pizza you had for dinner but can also eat through many types of metal.

4. The human body is estimated to have 60,000 miles of blood vessels. To put that in perspective, the distance around the earth is about 25,000 miles, making the distance your blood vessels could travel if laid end to end more than two times around the earth.

5. You get a new stomach lining every three to four days. The mucuslike cells lining the walls of the stomach would soon dissolve due to the strong digestive acids in your stomach if they weren’t constantly replaced. Those with ulcers know how painful it can be when stomach acid takes its toll on the lining of your stomach.

6. The surface area of a human lung is equal to a tennis court. In order to more efficiently oxygenate the blood, the lungs are filled with thousands of branching bronchi and tiny, grapelike alveoli. These are filled with microscopic capillaries which oxygen and carbon dioxide. The large amount of surface area makes it easier for this exchange to take place, and makes sure you stay properly oxygenated at all times.

7. Women’s hearts beat faster than men’s.The main reason for this is simply that on average women tend to be smaller than men and have less mass to pump blood to. But women’s and men’s hearts can actually act quite differently, especially when experiencing trauma like a heart attack, and many treatments that work for men must be adjusted or changed entirely to work for women.

8. Scientists have counted over 500 different liver functions. You may not think much about your liver except after a long night of drinking, but the liver is one of the body’s hardest working, largest and busiest organs. Some of the functions your liver performs are: production of bile, decomposition of red blood cells, plasma protein synthesis, and detoxification.

9. The aorta is nearly the diameter of a garden hose. The average adult heart is about the size of two fists, making the size of the aorta quite impressive. The artery needs to be so large as it is the main supplier of rich, oxygenated blood to the rest of the body.

10. Your left lung is smaller than your right lung to make room for your heart. For most people, if they were asked to draw a picture of what the lungs look like they would draw both looking roughly the same size. While the lungs are fairly similar in size, the human heart, though located fairly centrally, is tilted slightly to the left making it take up more room on that side of the body and crowding out that poor left lung.

11. You could remove a large part of your internal organs and survive. The human body may appear fragile but it’s possible to survive even with the removal of the stomach, the spleen, 75 percent of the liver, 80 percent of the intestines, one kidney, one lung, and virtually every organ from the pelvic and groin area. You might not feel too great, but the missing organs wouldn’t kill you.

12. The adrenal glands change size throughout life. The adrenal glands, lying right above the kidneys, are responsible for releasing stress hormones like cortisol and adrenaline. In the seventh month of a fetus’ development, the glands are roughly the same size as the kidneys. At birth, the glands have shrunk slightly and will continue to do so throughout life. In fact, by the time a person reaches old age, the glands are so small they can hardly be seen.

Facts: Hair and Nail

Hair and Nails

While they’re not a living part of your body, most people spend a good amount of time caring for their hair and nails. The next time you’re heading in for a haircut or manicure, think of these facts.

1. Facial hair grows faster than any other hair on the body. If you’ve ever had a covering of stubble on your face as you’re clocking out at 5 o’clock you’re probably pretty familiar with this. In fact, if the average man never shaved his beard it would grow to over 30 feet during his lifetime, longer than a killer whale.

2. Every day the average person loses 60100 strands of hair. Unless you’re already bald, chances are good that you’re shedding pretty heavily on a daily basis. Your hair loss will vary in accordance with the season, pregnancy, illness, diet and age.

3. Women’s hair is about half the diameter of men’s hair. While it might sound strange, it shouldn’t come as too much of a surprise that men’s hair should be coarser than that of women. Hair diameter also varies on average between races, making hair plugs on some men look especially obvious.

4. One human hair can support 3.5 ounces. That’s about the weight of two full size candy bars, and with hundreds of thousands of hairs on the human head, makes the tale of Rapunzel much more plausible.

5. The fastest growing nail is on the middle finger. And the nail on the middle finger of your dominant hand will grow the fastest of all. Why is not entirely known, but nail growth is related to the length of the finger, with the longest fingers growing nails the fastest and shortest the slowest.

6. There are as many hairs per square inch on your body as a chimpanzee. Humans are not quite the naked apes that we’re made out to be. We have lots of hair, but on most of us it’s not obvious as a majority of the hairs are too fine or light to be seen.

7. Blondes have more hair. They’re said to have more fun, and they definitely have more hair. Hair color determines how dense the hair on your head is. The average human has 100,000 hair follicles, each of which is capable of producing 20 individual hairs during a person’s lifetime. Blondes average 146,000 follicles while people with black hair tend to have about 110,000 follicles. Those with brown hair fit the average with 100,000 follicles and redheads have the least dense hair, with about 86,000 follicles.

8. Fingernails grow nearly 4 times faster than toenails. If you notice that you’re trimming your fingernails much more frequently than your toenails you’re not just imagining it. The nails that get the most exposure and are used most frequently grow the fastest. On average, nails on both the toes and fingers grow about one tenth of an inch each month.

9. The lifespan of a human hair is 3 to 7 years on average. While you quite a few hairs each day, your hairs actually have a pretty long life providing they aren’t subject to any trauma. Your hairs will likely get to see several different haircuts, styles, and even possibly decades before they fall out on their own.

10. You must lose over 50% of your scalp hairs before it is apparent to anyone. You lose hundreds of hairs a day but you’ll have to lose a lot more before you or anyone else will notice. Half of the hairs on your pretty little head will have to disappear before your impending baldness will become obvious to all those around you.

11. Human hair is virtually indestructible. Aside from it’s flammability, human hair decays at such a slow rate that it is practically nondisintegrative. If you’ve ever wondered how your how clogs up your pipes so quick consider this: hair cannot be destroyed by cold, change of climate, water, or other natural forces and it is resistant to many kinds of acids and corrosive chemicals.