periscope optics

ordinary cat, is the use of telephone line network, dial-up Internet, compared to the speed of optical network is much worse. Now with recent years, speed up the national network coverage and network speed, many cities will use fiber-optic networks, such as Shanghai in recent years will implement 32M home broadband network, where the use of fiber optics, than most of us are used 2M or 4M, such as telephone line broadband speed much faster, can be sa

on these studies, what can we get to use? 1. High saturation of Red (#FF0000), Purple (#FF00FF) recommended not to use; 2. High saturation of Blue (#1834D1), Orange (#FF4E00), can be used for a small amount of text can better attract visual attention, but it is best not for the links in the list; 3. Based on the previous analysis, we concluded that modulation can be used for list link blue methods: By lowering the blue channel color level to reduce the overall saturation of the color (for e

exposure , you may need the support of a tripod and other external forces. Whether using a big aperture or a small light circle, is the magic of your hand, because no light circle will have a different effect on the photo, this is based on the actual situation and the photographer's judgment and feeling to play. Aperture size and imaging quality The extreme aperture effect may bring unexpected effect to the photographer, but the true best imaging quality is to stay in the center aperture num

mask, and the text uses a shadow, which conforms to the background of the dark green to reflect the white font above. The middle made a relatively light gradient, very friendly to reflect the three-dimensional. The edge of the page body is also lined, to find it carefully Then below is the use of the upper lining line, with shadows instead of the three-dimensional button design Use a gradient mask with the top and bottom two lines Only use th

automation practitioner, Machine Vision engineer treatment is good, but it is difficult to attract a master's or PhD in specialized image processing academic training to join, because casually join that big Internet company to do image-related work, treatment can be automated engineers out of several streets. In addition, machine vision more applications belong to automation equipment this piece. And automation is a more interdisciplinary subject, involving machine vision, need to understand th

Java Reflection Concepts and class reflection First, the concept of reflection: The concept of reflection was first proposed by Smith in 1982, mainly referring to the ability of a program to access, detect, and modify its own state or behavior. The idea of this concept soon triggered a study of the application of reflection in the field of computer science. It was first adopted in the field of programming language design, and achieved results in Lisp and object-oriented aspects. Among them, lea

In the United States, the provision of performance monitoring services to the site is a mature industry. More and more websites are seeking assistance from third party performance monitoring agencies. 3 years ago on Thanksgiving night, an American user who shopped on a large American electronic shopping site was in trouble. He spent more than half an hour on the site to select a lot of goods, but in the shopping cart page under the "Go to Checkout" button, the system page is a problem. No matter

constant coefficient. In a linear time invariant physical system, the frequency is an invariant property, so the response of the system to the complex excitation can be obtained by combining its response to the different frequency sinusoidal signals; 4. The famous convolution theorem points out that Fourier transforms can transform complex convolution operations into simple product operations, thus providing a simple means of calculating convolution; 5. The discrete form of Fourier transforms c

1 What is the difference between WinCE and Linux? (business model, learning and development difficulty, support for hardware, stability, help for future development of engineers, help for future development of research Center) Advantages of embedded Linux OS compared to Windows CE: First: Linux is open source, a large number of Linux enthusiasts all over the world is a strong technical support for Linux developers, Windows CE currently 6.0 core is all open, the GUI is not open. Second: Linux has

-of-sight transmission between the centers in general, a condition that many small cellular sites are unable to meet. The Sub-6ghz non-line-of-sight solution employs a point-to-point architecture that is more suitable for dense underlying networks, but when using a licensed spectrum, narrowband channels severely limit the return capacity, and most sub-6ghz bands are expensive and often do not have spectrum permissions. Another option is fiber optics,

soliton is produced 1 people are inspired by the natural world 1834 Scott Russel to the ship in the river movement in the formation of water wave crest observation, found that when the ship suddenly stopped, the original in front of the boat was pushed up the wave still maintain the original shape, amplitude and speed forward movement, after a considerable period of time to disappear. This is the famous solitary wave phenomenon. 2 mechanism of optical soliton generation Soliton and solitary

reach 250MHz (tentative). ---http://bianceng.cn (learning computer) What kind of plan suits you?At present, the wiring manufacturers in the marketing of a lot of moisture. "Tested up to 300MHz" "Protection Applications", "6 types of cable is Gigabit Ethernet choice", "absolute exclusive supplier Solutions" and other market hype and publicity misleading will make users confused.There is no doubt that many users are concerned with installing, not a copper cabling solution.The company's approa

-inch phone is only 1500 and slightly thicker. Both sides of the glass, not only with the IPs screen optics have the most beautiful match, but also plays a role in scraping (note that Apple has never said it against the fall). I think a person with a normal aesthetic, after seeing the iphone 4, must admit that it is one of the most beautiful industrial designs in human history. Its design is just right, each design is not muddy, and mobile phone funct

on a variety of distances. In this way, we can overcome the shortcoming that the algorithm based on distance can only find the clustering of "circle-like". The idea of this method is that as long as the density of a point in an area is greater than a certain threshold, it is added to the cluster similar to the one. The representative algorithm has: Dbscan algorithm, optics algorithm, denclue algorithm, etc. 4. Grid based Approach (grid-based method

customer. Even the chat code is as follows: Of course, there are many beautiful customer service navigation, personal feel that the more professional station or personal station is more practical. Choosing a customer service number is also important. A few days ago by the Wuhan Optics Valley Square, next to a business office investment phone is: 027-876543121, look at me dumbfounded, I do not remember nor Yes, I do. A good resource is a price to pa

particular, and warranty period, all of the compliance with its category of application protocol to ensure that it can be run, It is a perfect quality guarantee system for the on-site structured wiring system. The end user expressly obtains the benefit of a written guarantee: The free upgrade operation has not yet occurred, but as long as it is generated in the wiring system within the effective service life of the first 25 years, in line with its category of all application protocols. To the e

has been a major factor in maintaining its dominance since it used standard copper cables. With these cables, we can support our phone systems, customer-facing networks, storage mechanisms, and server connectors. Here I would like to say back to the aforementioned fusion network. The advantage lies in simplicity: a set of physical devices, a network card, a switch, a paper supplier contract and a series of expensive cable detection tools, which is the full content of the converged network. Fu

is the time it takes to find a route in a forwarding publication. When a packet is received, the input port looks for the destination of the packet in the forwarding address to determine its destination port, which increases the cost of routing lookups when the packet is shorter or when the package is destined for many destination ports. Therefore, putting some of the frequently accessed destination ports into the cache can improve the efficiency of routing lookups. Both the input buffer and th

, probability, statistics, cryptography, acoustics, optics and other fields. 2. The physical meaning of image Fourier transform The frequency of the image is the index of the intensity of the gray scale in the image, and it is the gradient of the gray level in the plane space. such as: a large area of the desert in the image is a region of slow gray-scale changes, the corresponding frequency value is very low, and for the Surface attribute transform

like "noodles" affects the cabinet space utilization and appearance. chaotic scenes are like the tangle of many snakes, which cannot be clarified. We understand how things have evolved so far, but we cannot determine the root cause of this result. Is such chaos the result of technological evolution? More importantly, how can we improve data center cabling? This article explains how to design and implement the data center cabling infrastructure from three major challenges: topology, quantity, an