What is Protection: Definition and 134 Discussions

Protection is any measure taken to guard a thing against damage caused by outside forces. Protection can be provided to physical objects, including organisms, to systems, and to intangible things like civil and political rights. Although the mechanisms for providing protection vary widely, the basic meaning of the term remains the same. This is illustrated by an explanation found in a manual on electrical wiring:

The meaning of the word protection, as used in the electrical industry, is no different to that in everyday use. People protect themselves against personal or financial loss by means of insurance and from injury or discomfort by the use of protective clothing. They further protect their property by the installation of security measures such as locks and/or alarm systems.
Some kind of protection is a characteristic of all life, as living things have evolved at least some protective mechanisms to counter damaging environmental phenomena, such as ultraviolet light. Biological membranes such as bark on trees and skin on animals offer protection from various threats, with skin playing a key role in protecting organisms against pathogens and excessive water loss. Additional structures like scales and hair offer further protection from the elements and from predators, with some animals having features such as spines or camouflage serving exclusively as anti-predator adaptations. Many animals supplement the protection afforded by their physiology by burrowing or otherwise adopting habitats or behaviors that insulate them from potential sources of harm. Humans originally began wearing clothing and building shelters in prehistoric times for protection from the elements. Both humans and animals are also often concerned with the protection of others, with adult animals being particularly inclined to seek to protect their young from elements of nature and from predators.
In the human sphere of activity, the concept of protection has been extended to nonliving objects, including technological systems such as computers, and to intangible things such as intellectual property, beliefs, and economic systems. Humans seek to protect locations of historical and cultural significance through historic preservation efforts, and are also concerned with protecting the environment from damage caused by human activity, and with protecting the Earth as a whole from potentially harmful objects from space.

View More On Wikipedia.org
  1. Y

    About superconduct MRI quench protection

    Hi,I study protection of superconducting coils.I adopt heaters to protect coils.The circuit is in attachment. There are 6 coils,so I use 6 quench heaters.I want to know how I choose the heaters? It must do the Quench Heater Simulation for protection of superconducting coils before...
  2. V

    Characteristics of distance protection

    hi there I am have 4 simple question please help me 1.In the event of single phase – to – Earth fault how does each of these methods influence the fault current system voltages 2.What would happen in the event of loss of communications during a fault condition? 3.How would this compares...
  3. P

    Why is black better than white for sun protection?

    OK, so people say that wearing white is better than wearing black in the sun because white reflects light whereas black absorbs light. But at the same time it is said that black is better for sun protection (for example, darker skinned people are much less likely to get skin cancer than...
  4. Ivan Seeking

    ObamaCondoms: Practical Protection with a Sense of Humor

    Use with good judgement. :smile: http://www.obamacondoms.com/
  5. I

    Transformer Grounding: Advantages & Disadvantages for System Protection

    what are the advantages and disadvantages of different types of transformer grounding -with regard to system protection and fault current reduction? we have the following grounding types YN - YN YN - Delta Delta - YN Delta - Delta where can i find a good resource that explains this?
  6. T

    Seeking Surge Protection for Switch and Motherboard

    Hi, I have a switch connected to a motherboard. During ESD test with 8000kV (directly on the switch) the ESD spike caused my system to reboot, and I need some kind of surge protection betwee nthe switch and motherboard. I am not sure what I need to look for? Can anyone suggest a...
  7. A

    Generator Protection in Thermal Power Station India | Summer Trainee

    i am working at a thermal power station as a summer tranii in india...today my instructer told d protection of geneartor he tells us over current protection ... i am not satisfied ...is dere any over current preotection exists or not?
  8. T

    How to remove protection from flash memory?

    hi guys >>>> i have 4 giga transcend flash memory , and it was working in normal way , but now it doesn't accept to write or delete any files , giving message " the disk is write protected" ther is no hard lock on the flash ... also i tried to format it ...but it didn't accept for the...
  9. T

    Overhead transmission line protection failure

    Hello everyone , I am still new to the protection field so i would appreciate if you can help me with analysis of the following, A 13.8 Kv OHTL was cut and fell on ground , the cable was still live although being protected by Earth fault relays and Over current relays(Instantaneous and...
  10. T

    Is There a Free Alternative to XP Protection for Spyware and Malware Issues?

    I have some problems regarding spyware, malware and stuff like that on my computer. The browser runs much slower then normal and pictures cannot be adequately displayed. The XP Protection program recommends that I install their software but that will cost $50. Any equivalent software on the net...
  11. M

    Inability of Earth fault protection system

    As you know, for Earth fault protection of electrical system, the residual current measurement is often performed using the three line CTs. But in this case the protective relay must be slightly time-delayed to avoid spurious trips caused by circulation of a false zero sequence current following...
  12. hagopbul

    Exploring Our Atmosphere's Protection from Cosmic Rays

    Our atmosphere? Our atmosphere protect us from the cosmic rays what it consist of(the cosmic rays and the atmosphere)? How much is its power? How it (the atmosphere) stop these rays? What happened in high level of the atmosphere to stop it? What are the best gases (in the atmosphere) that...
  13. wolram

    What is the Sarcos Exoskeleton and How Can It Revolutionize Protection?

    I did think about high guard armour, but that is not invented yet, any other full body protection is rather cumbersome, so what are the options.
  14. M

    Differential protection and auto transfer system

    In a low voltage substation, including two incomings and a coupling circuit breakers, incoming C.Bs are connected to two individual power transformers which are fed from upstream medium voltage system. The two low voltage bus bars are equipped by a fast auto transfer system which is considered...
  15. A

    Short Circuit Protection Diagrams

    Is there any Short circuit protection diagram designed for power supplies which the current doesn't drop below 1A? Can you show me any?
  16. M

    The protection system false operation

    In an extra high voltage substation, the output overhead lines protected by standard protection system. That protection system contains high quality main and backup distance protection, sync/auto reclosing relays and separated static relay that specified to line circuit breaker which is named...
  17. J

    The Skin's Natural Protection Against Caustic Chemicals

    I didn't know where to put this since it pertains to both chemistry and biology so i put it here. One time i accedently spilt 31.45% concentrated HCl on my skin and didn't notice it right away but then i saw this fuming drop on my skin and i immediately washed it off, it never tingled, burned...
  18. R

    News Retroactive War Crimes Protection

    "Retroactive War Crimes Protection" http://www.nytimes.com/aponline/us/AP-War-Crimes.html?_r=1&oref=login So hypothetically, if they had (which they didn't) done something horribly inhuman and grossly illegal, they would be retroactively immunized. Of course there's no reason to be suspicious...
  19. S

    Zinc Coating: What Makes it Ideal for Steel Protection?

    Why Zinc is so commonly use coat metals such as steel? I know that its a good corrosion resistant metal to use but what properties of zinc make it good to use under normal atmospheric conditions? Does it have to do with the oxide layer that it forms around it?
  20. P

    Cathodic Protection: Understanding the Science Behind It

    What did iron do to protect copper? 1. I know it has a stronger reductive power than copper, which means it has more tendency to oxidize. Question: So, iron reduces O2 and H2O instead of copper? Or does it also reduce the copper that oxidized? Could someone explain me what really happens?
  21. N

    Diode Configuration in Protection Circuit: Nose-to-Nose or Tail-to-Tail?

    Hi All, I'm replacing a switch in a piece of equipment. I'm looking at the circuit diagram and the actual circuit, and I notice that the diodes in the circuit aren't wired as they are in the diagram.:smile: The HI signal is dc from 0-1 Volt and LO is ground. Is there going to be any...
  22. S

    Strengthening Road Bike Tires for Puncture Protection

    On standard road bike tires sometimes they put a soft/flexible kevlar layer to protect against puncture. I was thinking about putting in in hard/rigid kevlar layer to also protect against puncture, I know that this will make the actual tire stiffer and harder to deform, which could be a bonus...
  23. S

    News Protection from civil law suites

    Just thinking about those people like Eminem who people keep trying to sue, and end up having to pay huge amounts of money in legal bills to defend themselves. I was wondering if there are any laws to protect someone from having to pay this if they are found.. (whatever the civil-law equivalent...
  24. K

    Designing a Safe 500mA Source Circuit with Short to GND Protection

    I am designing a 500mA source circuit using a npn and pnp transistors. How can I protect the pnp if the output is shorted to gnd. Both transistors are in common collector configuration.
  25. R

    Cathodic Protection for Aluminum Boat: Zinc & Non-Use of Silver/Copper

    Hi there, Can anyone tell me if this is right. If I were to have an aluminium boat and I want to give the hull cathodic protection what metal would I use. I said that I would use a more active less noble metal such as zinc. by placing the zinc it becomes the sacrifial anode and the hull is...
  26. Kerrie

    News Born Alive Infant Protection Act

    In 2002, President Bush signed into law that requires abortion doctors to attempt to save babies born alive during an abortion. Reading my local news today, this act will be enforced much greater since our government is choosing to take on more morality issues. The beauty of this law (IMO) is...
  27. D

    Gyroscope for SUV roll protection

    A gyroscope of a certain size is mounted midship of an SUV of about 2100 lbs, and the gyroscope was setup to accelerate if this SUV accelerated. Now normally if a SUV makes a 90 degree turn past 35 miles per hour the driver looses control and or the vehicle rolls over. How fast would...
  28. C

    Could using bacteria DNA in humans make them resistant to radiation?

    I read in alocal daily that some bacteria have around 1000rads. Can we take that dna and put it in humans and make them resistant to radiation. Then can we use nuclear power everywhere(like planes, cars, etc)
  29. N

    Boric acid used to provide heat protection?

    Hi, Has anyone heard of a layer of boric acid being used as a heat shield? I know it is often used in solution and other composites to act as a fire retardant, but what I'm looking for is any reference to boric acid, by itself, being used as an insulator. Maybe like a layer of boric acid...
  30. N

    Boric acid used to provide heat protection?

    Hi, Has anyone heard of a layer of boric acid being used as a heat shield? I know it is often used in solution and other composites to act as a fire retardant, but what I'm looking for is any reference to boric acid, by itself, being used as an insulator. Maybe like a layer of boric acid...
  31. P

    Galvanizing and cathodic protection

    okay, I'm having an argument at home, we're all 2nd year engineers and have different views on the galvanizing process. the way i see it is metals are dipped in zinc (anode) and are connected to the metal (cathode). a reaction takes place which provides cathodic protection to the metal if the...
  32. J

    Finding L & C for Circuit Protection: dv/dt & di/dt Values

    I'm trying to use this protection cct. What I do know is that (dv/dt)max = 50 V/us and (di/dt) = 10A/us (us = microseconds) R = 1 ohm, R = 5 ohm, Vcc = 120 V Can anyone give me an idea how to find the right L and C ? Thanks
  33. T

    Designing a Heat/Fire-Resistant Safe for Data Protection

    Help. I need help in designing a "safe" that gives me heat and fire protection. I will be using an skins of steel and need help in selecting the core materials. I am trying to protect electronic media so the heat gain inside has to be close to minimal. I am also trying to keep overall wall...
  34. wolram

    STIMON caused a protection fault in module user.exe

    i have a problem can somone help please, i have this message with a blue screen, STIMON caused a protection fault in module user.exe at 0003:00009e46 i have a printer and scanner connected anthon 1.8
Back
Top