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Technology
The practical application of knowledge, especially in a particular area, is called technology. Advances in technology affect every area of our lives. This category is for questions about technology and includes everything from how to remove a scratch from a CD to applications of electronics to what polyester is made from and more.
35,090 Questions
What are various calculating devices are?
Pencil and paper, abacus, mechanical calculator, log tables, electronic calculator (or computer), proportional weighing machines.
How does the Solar cooker work?
Solar cooking is done by means of the suns UV rays.
A solar cooker lets the UV light rays in and then converts them to longerinfrared light rays that cannot escape. Infrared radiation has the right energy to make the water, fat and protein molecules in food vibrate vigorously and heat up.
It is not the sun's heat that cooks the food, nor is it the outside ambient temperature, though this can somewhat affect the rate or time required to cook, but rather it is the suns rays that are converted to heat energy that cook the food; and this heat energy is then retained by the pot and the food by the means of a covering or lid.
This occurs in much the same way that a greenhouse retains heat or a car with its windows rolled up. An effective solar cooker will use the energy of the sun to heat a cooking vessel and efficiently retain the energy (heat) for maximum cooking effectiveness.
There are three main components to most solar cookers, or you could say three main principles to effective solar cooking; these being:
- Concentration (reflection, or reflectance)
- Absorption (ability to attract or hold heat.
- Retention (means or capacity to retain heat)
Concentration of the sun's rays is performed most often by reflecting panels, petals and such surfaces that can "focus" or concentrate the rays of light (UV) to a point or concentration.These reflecting panels are usually made of materials that are shiny and reflective due to the substance used in their manufacture, such as silver, chromium and aluminum.Without a means to concentrate the sun's rays it can take longer to heat objects or surfaces, thus most solar cookers are constructed with reflector panels to speed up the process of heat accumulation.
Absorption of the sun's energy (heat)in solar cooking is best achieved when a surface is dark in color, thus the most common solar oven interiors are usually black in color as well as the color of the cookware used for cooking the food.
Dark colors absorb the heat, whereas light colors do not absorb heat well. And some colors can reflect the sun's energy away, such as silver for example. Generally, the best cookware for solar cooking is the dark, thin variety because it absorbs the heat (energy) well; and because it is thin, it can then transfer the heat more quickly and evenly to the food.
Retention is the final principle in solar cooking.If a solar cooker is not well insulated and if it does not have a cover, or lid, then all of theconcentrated heat (energy) and all of the absorbed heat would quickly dissipate into the air and be lost to the surrounding environment.A solar cooker must have the means to "trap" or hold the concentrated heat allowing it to accumulate and to "build up" to sufficiently high enough levels to be able to effectively cook.
* * A fourth principle, though not vital in all forms of solar cooking (parabolic cooking is one)is: transparency of your retentive materials, or in other words, your lid on a solar oven or your enclosure around your pot/pan on a solar panel cooker needs to be able to allow the sun's rays to penetrate inside to where the food/cooking vessels are located. This ability of the sun to penetrate is usually achieved by using clear glass, or plastic coverings on a solar cooker lid/door/enclosure which then in turn acts as an inhibitor, trapping the heat as well.
How long does your facebook acoutn get suspended due to phishing?
Well a suspension is not permanent s i am thinking they well e-mail you when you can come back.
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On Youtube how do you put pictures in your videos?
The only way can upload a picture to youtube is by using a video editor and inserting the photo in as a slide show and you can select how long you want the picture to play for. But most of the deltails depend on your video editor.
What is the difference between past and present technology?
When technology was invented it was weak. The cars were tough, and couldn't go fast. Communication was mainly by just walking to someones house and saying "Hi" Gaming...well.. gaming back then was playing baseball, or passing a ball back and forth. Technology has evolved a great deal from that era. Back then, you had to be watching a black and white television to even get a chance to here music. Or get a Record player thing. You could also listen to the radio, if you could afford one. Now, people have iPod touches, and MP3 players and CD players that they bring with them. Music is now everywhere in our life. That's only just one example of how the technology has evolved since the first form of Technology was released to the public!
The first computer was big, heavy, and fairly useless since there wasn't really anything you could do on a computer except maybe type. Now, computers are used around the world for an assortment of things. The first one is just the fact that we can brag about how great computers are now! Instead of having to buy a big piece of metal, we can go thin, and make it mobile. For example, Apple created a big Mac, which could only be used at home. They also created the Macbook air, and macbook pro. Light, portable, and excellent.
Another way technology has changed is that we now have evolved gaming to a whole new level. Instead of being outside in a burning sun, we can be inside playing video games. The graphics look so realistic, and you can even find some games where it feels like you are the character, instead of just controlling a character.
Movies are another great way technology is different from the past. Because technology has evolved cameras, projectors, and the width/length of screens, people can now enjoy a movie in High Definition! That means it'll look extremely brilliant on the screen. They've also evolved the way people can watch a movie. Certain movies can now be watched in 3-d! The glasses alone have definitely shown true evolution. From classing Red and Green glasses, to polarized light brown lens 3-d giant glasses.
LAN [ Local Area Network ] can be found everywhere that you find a network. It can be used to transfer data from one computer to another, or to share an internet connection.
For example, my wife and I have two desktop computers and two laptops, all connected together through a router [ hardware accessory ] to share one internet connection in our home.
What is Privilege instruction?
CPU's from the recent 15 years have powerful instructions that only the operating system must execute. These are privileged instructions.
3-D means "three dimensions". The three dimensions are length, width, and height.
Does lloydstsb offer internet banking?
Lloyds TSB Offshore banking appears to offer internet banking through their website for their members. If this is something you are interested in I would suggest contacting them directly to set it up.
What types pf termination are used for single-ended cable for differential?
For single-ended cables used in differential signaling, common types of termination include series termination and parallel termination. Series termination involves placing a resistor in series with the signal line to match the source impedance, reducing reflections. Parallel termination, on the other hand, connects a resistor from the signal line to ground or the power supply, providing a path for reflections to dissipate. Both methods help maintain signal integrity and reduce crosstalk in differential transmission lines.
What are advantages of direct changeover?
One of the only advantages is that it is very cheap. If the system works fine then the firm must have saved a lot of money. Sometimes This may be unavoidable where the two systems are substantially different, or where
the cots of parallel running are too great. Also High percentage of Outputs are new
It depends where you reside and and what service provider you are currently with, but most times they have a wide range from $100 for the basic PVR to 300 or 400 $ for really good ones with large built in hard drives.
What are the different approaches and technologies used by ethical hackers?
A large no. of technologies and approaches are used by ethical hackers.
It can range from a simple BufferOverFlow Exploit to a SQL Injection.
Different approaches require different techologies.
It can range from pure C/C++ to MSF(Metaspliot Framework).
Overall its difficult to name such a large no. of approaches and techologies used by Ethical Hackers.
But a few of them are:
Phishing, BufferOverflow, PHP Injection, SQL Injection, Denial-Of-Service attacks, KeyLogging, BackDoors etc.
They can also use the bugs present in already built software. For e.g.
Adobe Reader Bug, MS Help & Support Center Bug, 445 port bug etc.
Do Asus laptops come in different colors?
Yes, Asus laptops come in a variety of colors and finishes, catering to different aesthetic preferences. Many models offer options like silver, black, white, blue, and even vibrant hues like red and green. Additionally, some series, such as the VivoBook, are known for their stylish designs and colorful accents. This variety allows users to choose a laptop that reflects their personal style.
How do i invite someone on youtube.com to be a friend?
To add a friend on YouTube, just go to the channel of user you want to add as friend and invite him/her by clicking "Add as friend". YouTube can disable adding friends when you reached the maximum invitation per day.
What can i put in a room to make it look cool?
i think to have the perfect bedroom, especially if you are a teen, you need the key things, and then the optional things:
key things:
1. a funky bed, like a water bed or a chair bed.
2. posters, photo frames and a few pictures to add some interest to the walls or maybe get your friends to sign their name on your wall
3. a big wardrobe, or set of draws for the clothes
4. a desk for homework, drawing and a computer
5. a tv :o always needed
and then there are the optional things:
1. a beanbag or chair, or even better, a sofa bed so you can have your friends round for a sleepover
2. a mini fridge to store things like coke and chocolate
3. a shoe rack for your shoes
4. a rug on the floor and tonnes of pillows on the bed :)
5. fairy lights, beads on the door, a chandelier, etc
6. glade plug ins or scented candles
7. a games station to play on
8. something other of your interest such as a boxing set, or candy dispenser
hope this helped, ive been doing the research myself :) xxx
Does technology bring us closer together?
The computer has been used as a tool (along with internet service providers and social media websites, among many other things) to allow people to send messages, photos, and videos of themselves to others and create, maintain, and re-spark relationships online. Think of people coming together using a computer the same way they may meet each other at a coffee shop using a car or truck.
What are the pros and cons for licensing technology?
Some of the pros of licensing technology are that the owner shares in any technological improvements and receives technical assistance. Cons include loss of control over the product and loss of intellectual property.
How Do You Find What your Mobile phone Number is?
Usually when you got your phone it should have come with a number. But, it all depends on what type of phone you have to where you can find out the number. Either call customer services and ask for your number or, to perhaps save a little embarrassment, try and find the options category on your phone. It should be either there or, if you cannot find it, try looking for the service status in your phone. it should definitely be there. Hope this was useful!
Which software companies create corporate security software?
DT is a company of highly skilled specialists with huge experience that are always ready for cooperation. Our primary goal is to help companies engage remote developers and development teams to build first-class software products at competitive prices.
Assuming you mean short term memory then ....
1. It's faster than storage memory. Ram Speeds are much faster then the access or seek times of lomg term storage memory (like hard drives). Thus these temporary files are quickly stored and recovered while the processor is doing something else.
2. It's only there while powered, so it's no good for long term storage.
Hope that helps
A computer hacker usually gets into a companys network by?
Organisations store huge amounts of data in databases to keep track of everything from customers, orders, employees etc. These databases usually have externally facing connections, such as to a web server. One way a hacker could attempt to gain access is through SQL Injection.
When you browse a website and click on a link, a request will be sent to the server for information. SQL injection involves sending extra code alongside request. So for example, instead of displaying a list of products, it displays the entire list of employees, you get the idea.
