Digital Diary: 2023: A

 02 Jan-2022

A)  Nautilus-X (Non-Atmospheric Universal Transport Intended for Lengthy United States Exploration) is a rotating wheel space station concept developed by engineers Mark Holderman and Edward Henderson of the Technology Applications Assessment Team of NASA.

B)  Artificial gravity is the creation of an inertial force that mimics the effects of a gravitational force, usually by rotation.^[1] Artificial gravity, or rotational gravity, is thus the appearance of a centrifugal force in a rotating frame of reference  Link

C) 

1) A light wave that is vibrating in more than one plane is known as unpolarized light. The light emitted by the sun, by a lamp or a tube light are all unpolarised light sources. 

2) Polarized waves are light waves in which the vibrations occur in a single plane. 

3) Following are the three types of polarization depending on the transverse and longitudinal wave motion:

• Linear polarization
• Circular polarization
• Elliptical polarization 

4) There are a few methods used in the polarization of light:

• Polarization by Transmission
• Polarization by Reflection
• Polarization by Scattering
• Polarization by Refraction

D) Centrifugal force is the apparent outward force on a mass when it is rotated. 

02 Jan-2023 

FREE Excel Templates for Your Daily Use – Download 

25/01/2023 

What is Bootstrap used for?

Bootstrap is a free, open source front-end development framework for the creation of websites and web apps. Designed to enable responsive development of mobile-first websites, Bootstrap provides a collection of syntax for template designs.  

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SSL stands for Secure Sockets Layer and, in short, it's the standard technology for keeping an internet connection secure and safeguarding any sensitive data that is being sent between two systems 

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Symmetric encryption uses one key to encrypt and decrypt. If you encrypt a zip file, and then decrypt with the same key, you are using symmetric encryption. Symmetric encryption is also called “secret key” encryption, as the key must be kept secret from third parties. 

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Why is virtual memory used?

The main advantage of virtual memory is that an OS can load programs larger than its physical memory. It makes an impression to the users that the computer has unlimited memory. It also provides memory protection. In order to realize the mapping operations, virtual memory needs to use page tables and translations. 

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What is virtual memory?

Virtual memory is a method that computers use to manage storage space to keep systems running quickly and efficiently. 

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2 types of virtual memory ... 

The two ways computers handle virtual memory are through paging and segmenting. Here are some of the differences between these types of virtual memory: .... 

By moving unused files into its hard drive, the computer frees its RAM space for other memory tasks and ensures that it doesn't run out of real memory. ... 

Computers that rely on physical memory tend to be faster than computers using virtual memory. ...

When choosing a computer, you may prefer one with more RAM if you often run many applications at once. If you typically work with only one or two computer applications most of the time, you may not need as much RAM.

https://www.indeed.com/career-advice/career-development/virtual-memory  

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03/02/2023 

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