Business

What can You Use for Rear Projection Screen?

Rear projection screens are difficult to make. They have to achieve two things in order to work:

 

First, they need to pass light freely. As the projector is behind the screen, the audience in front of it would see nothing if the screen failed to pass light from one side to another.

 

Secondly, they have to prevent light passing straight through or no image would be seen, just the light from the projection lens.

 

The two requirements are in conflict with each other. The more that light is captured by the screen and then dispersed, the less is actually delivered to the viewer. The more that light passes freely through the screen, the more obvious the light source becomes. Screen manufacturers spend a great deal of time and money to produce either rigid or flexible surfaces that meet both requirements and result in an evenly illuminated image. Homegrown equivalents are hard to produce but there are two ways that may produce results.

 

In past times, glass was ground on one side to produce a frosted surface. Glass producers can still carry out the process but the cost is likely to be even higher than purpose made screens.

 

The other option is remarkably low cost. Translucent paper such as tracing paper, baking paper, greaseproof paper etc can be used for small screens. Held flat in a frame, these papers can produce a fairly respectable image. Most certainly, they are not equivalent to a good projection screen, but for cost, they are unbeatable.

Finally, stage effects sometimes use a gauze as a screen. The open weave makes them semi transparent and they can be used as a form of rear projection screen. They only work from a distance so for normal rear projection applications they won't be very effective.

 

Treat all of the ideas as experiments and have fun with them.

 

Vending Machine

A vending machine is a machine which dispenses items such as snacks, beverages, alcohol, cigarettes, lottery tickets, cologne, consumer products and even gold and gems to customers automatically, after the customer inserts currency or credit into the machine. Each of them all accompanied with a vending lock. 

 

Candy and Soda                                                                                                

The standard vending machine comes to mind is one that offers candy, snacks and sodas for spare change. These machines are available in various locations, including office buildings, schools,    (Vending Lock)        train and bus stations, mall and shopping facilities. Other types of vending machines include gumball machines or smaller vending machines that only offer specific types of candies including chocolates,hard candies or candies with a toy.                                                                                                                                                                                                                                      

Coffee

Some vending machines also offer freshly brewed coffee, hot chocolates or teas. These vending machines allow users to choose specific types of coffees for a given price and provides the cup, the coffee and milk or cream, if selected. Each vending machine offers a full coffee menu. These vending machines are located in offices, university and college environments and some shopping facilities.

Change

A vending machine offering change in exchange for bills is also a useful vending machine in certain environments. For example, this type of vending machine is useful in places where change is required, such as parking garages or laundry shops. A change-vending machine works by offering smaller bills and coins in exchange for larger bills or credit cards.

Toiletries and Medical Supplies

Vending machines filled with toiletry and medical supplies are located in public bathrooms at the airport, bars, restaurants and clubs. These vending machines provide supplies, such as tampons, face cloths, teeth floss, small toothbrushes, toothpaste and condoms. Those located in airports may also have deodorant and temporary body spray, so travelers can refresh themselves after a long flight.

Office Supplies

Some vending machines offer products, such as office supplies. These types of vending machines are useful in scholastic settings, airports, libraries and career centers, where students may be looking for work. These vending machines provide pens, paper, UBS flash drives, notepads, pencil sharpeners, small staplers and mailing products, such as envelops and stamps.

What Does A Xbox 360 HDMI Cable Made For ?

Science that has been made in its relative fields has provided us with a number of amazing discoveries. These inventions have not only played an important role in making our lives more convenient but also make possible the prospect of creative thinking and development. The field of inventions that resides in the multimedia sector of the concerned field contains many wondrous and surprisingly advanced devices. The AV to HDMI Cable Xbox 360 is one such device that has pleased and affirmed to the needs and wants of many a flabbergasted or distressed buyers or client.

 The HDMI cable is made to simplify your entertainment system. It also gives you maximum high-definition. Just plug one end into your Xbox and the other into the back of your HDTV and your done setting up! It’s much easier than plugging in 3 to 6 AV or component cables. The Xbox 360 offers an HDMI port for attaching the 360 to an HDTV and experiencing 360 games in full HD picture and sound quality. The Xbox 360 also offers other video connection types such as RCA -- red, yellow and white -- and component -- red, green, blue, red and white -- so the HDMI cable is not the only option for connecting your Xbox 360 to a television, but it is certainly the option that offers the best picture and sound quality.

 You can use other types of cable than HDMI to connect in HD, and the process will be the same as described above. Other types of cable may not provide a full range of options, though. If using the Xbox AV cable, you will need to move the switch to the HDTV setting.

Have trouble with power supply for portable device? Get the custom li ion battery to fix it

Have you ever think how it would be to make presentation without your notebook? Would it be boring without a mp3 player while jogging? Yes, more and more products have become portable and provide much convenience for people. Now, if you are new in the field of making portable devices, maybe the power source is the one of the most important parts.

Fortunately it's not too hard to find the good battery manufacturer. If you are the consumer of portable device, usually you would buy the one with smaller volume when the function of them are mostly the same. I mean, since it is made for portable, the volume does effect the consumers' decision.

You may have many choices of the power resource, but for the products must be made in portable size with light weight, the li ion battery would be definitely one of the best solutions. It could provide stable power supply and make in specific size to fit your design. That's the reason why it could be considered as one of the best solutions for power supply.

The benefit of riding a steel bike frame bicycle

 
      Which traffic tool you take to go working in the morning? By bus, MRT, motorcycle or cars? Each of them is common but also has the same problem, it need the fuel; and that means you have to pay. Besides, all of them would generate pollution, I guess that is the reason why bicycle has become the popular choice in many big cities.

        Riding a bicycle is quite convenient and healthy, it generates almost zero pollution and is free to park easily. All you have to pay is to assemble your bike with the steel bike frame, wheels, handles and enjoy the fun of DIY your own bike; or you can simply buy the finished one instead. Once you start to ride it, you may feel the difference and fun of riding bike.

        It used to be only few choices of bikes, now, there are various kind of choice, the bicycle with carbon or steel bike frame, for riding in the city or mountain, it can be folded or not and etc. No matter which kind you prefer, just remember to choice the one with firm structure for your safety, then you can feel the change and enjoy the benefit of riding bike.

The various usages of ball mount for transportation

        Outdoor activity is a popular choice for having a nice weekend. Some people prefer to take a walk at the place with trees and grace instead of cars and sky scrapers, some would like to go surfing or riding bikes and etc. If you are just going there for few hours, you can just take the wallet and something necessary; however, if you have to carry some equipment such as your own surfing boards and bikes, it would be a problem need to be solved first.

        The reaction vehicle would be the first idea most people think, but sometimes get a ball mount would be another great solution. It is used to connect with the trailer, if you are going out with friends and bring your own equipment, towing it would be a alternative solution better than putting all the stuff in the back.

        Further, the ball mount is not only for saving more space for passengers in the car; sometimes if you are buying something big such as furniture, using a trailer to transport it is also easier than put it over the back of your vehicle, unless your are driving a truck.

High quality sound comes from audio cable with quality

Some people think the really great invention is not just tool or machine, it should be lasting for ever as a classic such as music. In the dinner, book store, department store and so on, the musci is everywhere in our life. Maybe the cellphone or computer change some habits we used to, but the music can change something more precious.

Now, most people used to listening to the music when taking a bus, MRT or walking. If you find a great song and try to share with friends, you would need a speaker and audio cable; it would be much better than passing the ear phone on by one, right?

The developement would nerver stop when the requirement exists. When you realy like the music so much, then you might be willing to pay for quality. Actually, the best music you can hear is the live, any tapes, CD and mp3 would loss part of the sound wave after processing. Via the specific audio cable, you can enjoy the sound just like you are there; of course, it takes prices as well.

Riding bikes is quite benefit for both the health and wealth

        The latest news of Olympics held in London, some people have the rights to choose working at home or the office nearby for weeks to prevent the worse traffic jam, and lots of people feel unfair and admire those lucky guys. In fact, in most big cities such as New York, Chicago, Tokyo and others, the traffic in the morning is always nightmare for students and people work in the regular time to arrive the office around 9:00. But the interesting thing is, riding bikes suddenly become an alternative solution to solve this problem with ease.

        The traffic jam is usually because of lots of vehicles gather on the street at the same time, the drivers have no choice but waiting, the pedestrian could be sometimes blocked in the crowd. In this situation, if you are riding a steel bike with light weight and easy to handle, you can arrive the place you want to go much faster than others and the cost is zero, no parking fee or paying for subway tickets.

        In fact, many countries have built the paths for bikers, not the motorcycle generates pollution but the bicycles only. Especially Holland, it is the most cycle friendly country, with the designed cycle routes for tour and the cycle network allow bikers to take the bicycles as the traffic tool anywhere. Of course, you have to spend some money to get the bicycle you need, maybe made with steel frame, qualified gear transmission unit to switch easily and other equipment you need.

        However, each penny you pay would be worthy. You are not just buying a nice bike; you just buy your self something better. Riding bikes is quite benefit, you have to use most muscle you can not train normally and also efficient in raising the stamina. Health, that's the wealth you can not buy; the only way to get it is exercise, and you can just get it via riding bikes everyday!

Let the cheerleading bows help you to make people amazing in the first sight

        When you go to a fashion party with a dress, people would usually choose a accessory simple but make you look more stylish, just like you are the model on the runway. In the different stage, cheerleaders also try to get more attention on the field, since they have to move, jump and flip; the only accessory could be just fit and would not be a trouble during performance, it should be the great smile and the unique cheerleading bows.

        The uniforms of cheerleaders are usually colorful with no doubt. But since you are on the stage much bigger than runway, the accessory to catch somebody's eyes must be considerable. The cheerleading bows, they are always made with the color on the uniform to be like a set and at the same time it could be a keypoint to be a plus or minus in the games.

        Compared with 20 years ago, the cheerleading uniform is quite different, the fit design to show the shape of body, the colorful cloth, patches and other accessories make the cheerleaders just like a star that is hard to be ignored on the fields. Therefore, spending more time to design a unique cheerleading bows for your team is a great idea to impress audience before you step up and move.

The benefit of jump ropes and few things to notice before started

        Exercise is always benefit for health, some people would like to jog after work, play basketball at weekend and so on. Some might be lazy or have the excuse of no field around your house, well, maybe you can try the sports needs only few space, jump ropes.

        When we were kids, it seemed like a game to us; in fact, jump ropes is quite helpful to train your body evenly and learn to control some muscle that is hard to notice normally. Besides, compare with other sports, all you need to carry is only the jump rope and find a space enough for you to do it.

        However, it's simple and easy for sure, you might still get hurt if you didn't pay attention. First, remember to choose the jump ropes with the right length for you, and try to find a flat ground. If you are not so good at it, get a pair of shoes with the shock absorber to reduce the impact of jumping up and down. When you know how to jump ropes, you should also know your body quite well.