Computer Fundamentals Index

Computer Introduction Types of computer Characteristics of computer Uses of computer History of Computers

Computer Languages

Low Level language Middle level Language High level language

Computer Generation

Generation of Computers First Generation of Computer Second generation of Computers Third generation of Computers Fourth generation of Computers Fifth generation of Computers Sixth Generation of Computer

Peripheral Devices

Input devices Output device


Block diagram and basic components Control processing unit (CPU) Software Hardware


Computer Memory Registers Memory Hierarchy RAM Vs ROM Understanding file sizes (Bytes, KB, MB, GB, TB, PB, EB, ZB, YB)

Computer Network

Types of Network Types of Area Networks (LAN, WAN, MAN) TCP Flags

Computer Virus

Computer Virus

Computer Ports

Computer Ports


How to hack a computer How much do Computer Programmers make How does a Computer work How to associate a file with a program How does a computer convert text into binary How does a computer process data into information How to fix a CD-ROM DVD How to fix the no input signal How to install computer memory How to associate a file with a program How to log out of your operating system How do I change my name on Google How to installation or uninstallation Microsoft Paint How to fix a not a valid Win32 application error How to fix missing Microsoft Windows .dll files How to use a computer keyboard How to erase my hard drive and start over How can I test how many words I can write a minute How to shut down a computer How do I open and edit the Windows registry How to edit the registry from the command line How to restart Microsoft Windows How to install a computer processor How to open Microsoft Paint How to fix problems in Windows after installing new software How to enable or disable the preview pane of Microsoft Outlook How to open a Microsoft .wps or Works file in Word How to view the HTML source code in Microsoft Word How to View or Change the Screen Resolution of a Monitor How to Connect and Install a Computer Keyboard How to Delete Temporary Files in Windows 10 How to determine Which Version of Microsoft Office I'm using How to find out how much hard drive space is available How to Fix PC Stuck on Verifying DMI Pool Data How to choose which items show in the notification area How to find similar images using Search by Image How to fix Low Memory and out of memory errors How To Replace the CMOS Battery How do I Update my Antivirus Program How to fix a general protection fault How to Identify problems in the Windows Device Manager How can the Base be Shown How to test if a Website or Web Page is down How Much is 1 Byte, Kilobyte, Megabyte, Gigabyte, etc How to fix a CMOS checksum error How to Fix a Windows CD-ROM, DVD, or Disc Drive Issue How to Open Safe Mode How to Password Protect Files and Folders in Windows How to Reset CMOS or BIOS Settings How to use Computer Keyboard How to create a text file How to enable or disable DHCP in Windows How to test computer memory to determine if its bad How do double space or change line spacing in Microsoft Word How do I know if I have Windows Administrator Rights How many cores does my computer have How to Create a Directory or Folder How to Enter and Exit the BIOS or CMOS Setup How to change Windows Compatibility mode How to clear your internet browser history How to Connect Computer Speakers How to Copy a Web Page Link or URL How to install a Hard Drive or SSD How to Open the Windows Control Panel How to split a screen in Windows How to copy text from a scanned PDF


Who invented Computer What are the advantages of the Internet? What are the disadvantages of the Internet? Is my computer 64 bit? What is Edge Computing? What is a Router? What is Monitor What is Printer What is a Web Browser What is Microphone What is a Webcam What is PC What is Keyboard What is Motherboard What is WAP What is URL What is a Digital Assistant When was the first Computer Invented What is Modem What is Firmware What is Imperative Programming What is Protocol What is Safe Mode What is Device Driver What is Hybrid Topology What is Mesh Topology What is Procedural language What is a hyperlink What is a Username Who invented the Internet What is Video Card What is Sound Card What is Binary What does Alt+B do What does Alt+D do What does Alt+E do What does Alt+Esc do What does Alt+R do What does ALT + Q do What does Alt + Tab do What is Data Manipulation What is a touch screen What is Back Panel What is Analog Monitor What is AR lens What is an ATX Style Connector What is a File System What is Hard Disk Drive (HDD) What is a boot device What is accessibility What is Line In What is network Interface card (NIC) What is Optical Disk Where can I ask questions on the internet What is Auto Rotate What is CAD (Computer-aided design) What is Cable Modem What is Home Page What is boot menu What is braille reader What is flash memory What is Windows What is Clipboard What is Cyber Warfare What is Myspace Why has my IP address changed What is Jacquard Loom My computer is running slow, what steps can I do to fix it What is a Kensington Lock What is a multicore processor What is automation Are smartphones and tablets computers What is a Login Script What is a Loosely Typed Language What is Multitasking? Why my computer monitor shows no display or black screen What is REM What is Parallelization What is Overtype mode What is open with What is Bracket What is an Online Service What is REM What is Parallelization What is Overtype mode What is open with What is Bracket What is an Online Service What is the Pg Dn Key (Page Down Key) What is the Pg up Key (Page up Key) What is Palmtop Computer What is a Processing Device What is a Print Preview What is the Print Screen Key What can I do if my computer or laptop is lost or stolen What is a Model Number What are the currently available antivirus programs What are Toggle keys What is a Case fan What is a Silicon Chip What is a Slate PC What is a TAB stop What is an Octothorpe What is Task Pane What is Task View What is the svchost.exe file used for in Windows Where can I find free online virus scanners Why am I unable to increase the resolution in Windows What is Autofill When I click my mouse, it sometimes double-clicks What is Scratch What is UDIMM What is MsConfig What is an Expansion Card What is an Executable File What is an Elevated Command Prompt What is an AC Adapter What is AIMBOT What is a Software Suite What is a LED Monitor What does Alt + X do What does alt + space do What does Alt + O do Now that I’ve got a Computer, what can i do What is a Punch Card What is RDIMM What is Select All What is Serial number What is Thermos flask What programs can I use for speech recognition What are the Advantages of Computers What are the Disadvantages of Computers What does Alt + T do What Hardware Device Drivers should be Updated What is a Desktop What is a Ring Topology What is CMOS What is a Directory What is a Mechanical Mouse What is a Plotter What is a Variable What is an Icon What is Data What is HDMI What is Remote What is Right-Click What is SMPS Why does my Laptop not turn on What is a Copyright What is a Cordless Mouse What is a CSV file What is a Joystick What is a Start Button What is a Taskbar What is an Alignment What is an Output Device What is Cat 5 What is Google Chrome What is Post What are Recordable DVD Drives What Does Alt + F4 Do What Does Alt + L Do What is a bit (Binary Digit) What is a cable What is a Calculator What is a capacitor What is a Cold Boot What is a Dialog Box What is a Dual-boot What is a Slide What is A4 What is AM What is Barcode Reader What is EHCI What is a Header What is a Joystick What is a Secondary Storage Device What is Access Time What is Account Sharing What is an Asterisk What is Asynchronous DRAM What is Back Quote What is BIOS What is Borderless Printing What is Case Badge What is CD-ROM What is Chat Slang What is Composite What is RJ Cable What Are Bottom Row Keys What is SAN What is Tray What is VDU What Does Alt + M Do What Does Alt + P Do What is a Cell What is a Command Key What is a key Combination What is a Menu Bar What is a Startup What is a T What is Chat What are the F1 through F12 keys What does Alt + Enter do What Does Alt + Home DO What does Alt + R do What does Ctrl + B do What Does Ctrl + Enter Do What Does Ctrl + R Do What does Ctrl + G do What does Ctrl + 9 do What does Ctrl + End do What does Ctrl + O do What Does Ctrl + P do What Does Ctrl + Q do What is a Colon What is a Core What is Apple Touch Icon What is Clock What is Code What is Computer Crime What is Ctrl What is DAT What is Data diddling What is Date Why won't my computer turn on What Does Alt + N Do What does ctrl + 2 do What does ctrl + space do What does Ctrl + W do What does Ctrl + T Do What Does Ctrl + 2 do What does Ctrl + 5 Do What are the most common file types and file extensions What are Sticky keys What Does Ctrl + Shift + Esc Do What is Settings What is Task Manager What is Taskbar What is a DNS Resolver What does ctrl + 1 do What does ctrl + 0 do How to install software What is a Folder What is a Legend What is a MAC Address What is a Path What is a Ruler What is a Toolbar What is an Intranet Meaning and Differences with Internet What is an SSD What is Inheritance What is Tablet What is Depth What is Docking Station What is Double Click What is a Solid Ink Printer What is a Temporary File What is Backup and Restore What is Electronic Payment Systems Eps What is Marshalling


Difference between hardware and software Difference between multiprocessor and distributed systems Difference between Desktop and Laptop Difference between File and folder Difference between Hard Copy and Soft Copy Open Source Programs vs Closed Source Programs Difference between Optical Fibre and Coaxial Cable Difference between Website and Webpage Difference between Classes and Objects Input VS Output Difference between Primary and Secondary Storage with Examples


Quantum Computing Computer Software Autoexec.bat and config.sys info Update an Antivirus Use of Internet Advantages and disadvantages of Email Computing Power Internet Explorer Shortcut Keys Advanced Encryption Standard (AES) Augmented Reality Infrastructure Readiness Check Top 10 Internet tips and tricks Introduction and Features of FoxPro Features of Multimedia Top 10 online services and applications Receiving S.M.A.R.T. status bad backup and replacing error Version Control System Uninstalling Software or Apps in Windows Data Warehouse Increase or decrease font size in Word using keyboard shortcuts Mouse not detected or working in Windows Computer Cleaning Information and Steps Function Keys on Keyboard Windows 7 Alt+Tab won’t stay on top or stick 10 Essential Examples of Web Browsers Binary Subtraction using 2’s Complement Case Sensitive Languages Computer Pioneers and people who are CEO Microsoft Word Shortcut Keys Parts of Computers Names, Definitions and Images ROM and its Types Basics of Information Technology Characteristics of a Good Software Design Characteristics of Management Information System Classification of Management Information System Implementation of MIS Input Devices of Computer Definition Limitations of Management Information System 3 Types Of Network in Computer Block Diagram Of Control Unit

What is AR lens?

The full form of AR is the anti-reflective lens. AR is a type of optical coating that is applied to the plain of the lenses and other optical elements to minimize the reflection. This increases the efficiency of imaging devices in rare cases since less light is wasted owing to reflection in complex systems like Cameras, binoculars and etc. By eliminating stray light, the reduction in reflection improves the image's contrast. 

What is AR lens?

An AR lens is a camera effect that adds add to reality components to your images in real-time. It's also known as a face filter or a Snapchat filter. The social media apps use the AR lens to interact with the user and allow them to activate the motion graphics and effects by doing an action like closing their eyes or it may be moving their mouths. It is constantly used to make comical aesthetic modifications to the photo's subject, such as aging or adding cartoon effects.

Once Snapchat is popularized, then the other social networks, i.e., Instagram, Facebook, or TikTok, also use these AR features. AR lens is also used by video chat apps, i.e., FaceTime. You may also update user-created lenses, which include some pretty imaginative games and pop culture references, thanks to the application's basic filters.

AR lenses, particularly those used on Snapchat, have been chastised for imposing unachievable aesthetic standards. Even comedic face filters, such as the 'dog lens' seen above, are known to smooth and alter the user's face, removing fault and adding the example of makeup.

Application of AR lens

AR coatings are utilized in a large variety of apps where the light goes through an optical plain, and low loss or low reflection is desired. Anti-glare coatings on components and anti-reflective coatings on solar cells are two examples of AR coatings.

How Anti-Reflective lens Works

Anti-Reflective coatings, also known as AR coating or Anti-Glare coatings, are applied to the glasses by a series of layers stick to the front and back sides of the lenses. These layers on glasses block a certain wavelength of light, helping to minimize the reflection. AR coating makes glasses low reflective, and this makes your glasses look nice in photos and bright lights. Although some claim they minimize glare to some expanse, there is significant disagreement about how much it helps with glare.

Advantages of Anti-Reflective lens coating

One who uses the anti-reflective lens coating is known very well for its uses of it. There are some following uses of AR lens coating:

  1. On the vision, you see fewer glares, and it also helps to see in an environment where light is available.
  2. Like nearsightedness, it also helps to reduce eye strain by stopping treatment conditions.
  3. Anti-reflective lens coating helps us to better protection from the sun's rays and dangerous Ultra-Violet light than regular eyewear.
  4. Some people use anti-reflective lens coating glasses and instruction lenses to reduce the glare of computer screens when reading in bright situations.
  5. Limiting high-energy visible light block eye fatigue.
  6. It also helps us to save our eyes from Ultra-Violet rays, glare, and other reasons related to the sun.
  7. The glare of the AR coating is reduced, making it more comfortable to operate on screens for increases periods of time.
  8. Glasses with AR lenses may be readily removed for cleaning, which prevents them from becoming filthy and improves vision clarity.
  9. Anti-reflective lens coating glasses reduce any reflections that may occur when staring at a light source such as a computer or television screen.
  10. AR lens is also used to minimize the quantity of glare that you watch at a window or other reflective plain.
  11. Anti-reflective lenses are far less expensive than instruction glasses, making them more affordable to those who might not otherwise be able to afford them.
  12. The Anti-Reflective lens offers a larger field of view, which is ideal for people who wear glasses to see things from afar, such as when driving or watching television.
  13. It would also allow us to focus on details more clearly as compared to traditional eyeglasses could. This makes them ideal for use in low-light situations or while doing complicated work with small objects such as jewelry or electronics.
  14. It keeps their eyes from drying out as it allows less light into their eyes and is regularly constructed of materials that reduce friction on the eyeball, it might induce dryness.
  15. Anti-Reflective lenses are also frequently used to clean since they feature an anti-reflective coating that avoids smudges and makes it easy to clean them with water when necessary.

Disadvantages of Anti-Reflective coating

In some cases, AR coatings are not good. It has its own set of limitations. The greatest disadvantages of AR coating glasses are that it is more expensive as compared to regular eyeglasses. This is the main reason to not use these glasses as people who need this but do not have the finance to buy them. Therefore, it has numerous disadvantage such are as follows:

  1. It is not under medical necessity, so, it is hard to buy by those without insurance coverage.
  2. The anti-reflective lens has a thin layer. It is easily scratched or worn down after a time, which makes it hard to see clearly.
  3. As it does not block all rays and glare from reaching your eyes, it might cause eye strain and headaches.
  4. Patients with eye disorders such as Macular degeneration or Cataracts may also experience difficulties. A contact lens with an AR lens coating can aggravate their condition by making it more difficult to remove the contacts without injuring the fragile membrane surrounding their eyes.
  5. The AR lens coating has a shorter useful life span. This can be due to the AR lens coating wearing off and being less effective after a time, resulting in you having to buy another pair of glasses.
  6. It has also does not any tinting, so it does not protect from Ultra-Violet rays.
  7. Because of rush or allergy-like symptoms, many people are sensitive to the coating and will experience mild pain as it rubs off on their skin when they touch them.
  8. Remember that you will have to replace them over time as the coating wears off and becomes less effective, which means you'll end up paying more in the long run. AR lens coating glasses are usually not covered by insurance and must be paid for out of pocket.
  9. Anti-Reflective lens coating glasses may induce headaches because they lack tinting or polarisation to filter light from various angles, which can create eyestrain while seeing screens for long periods of time.
  10. Some people may not be able to wear anti-reflective lens coating glasses, such as those who suffer from allergies or have sensitive skin, necessitating the use of prescription lenses that are prone to scratching and cannot be worn in the water.

How to care of your Anti-Reflecting lens coating glasses

Anti-glare glasses with anti-reflective lens coating should be cared for to ensure that they last as long as feasible. Some general principles for proper use and storage are as follows:

  • Avoid exposing your AR lens coating glasses to immoderate heat or cold since this may cause the coatings to peel off faster than usual.
  • Always clean them after each use, and never use an alcohol-based cleaning solution.
  • When not in use, it should be kept in the dark place to stop the coating from peeling off sooner than intended.
  • To avoid damaging your glasses, handle them with care.
  • Do not use it in high-adrenaline situations like skiing or at the beach. They're only meant to be used indoors.
  • Clean them with water and gentle soap to avoid any potential damage from rubbing cleaners.