Opening Hour

Mon - Sun, 08:00 - 24:00

Call Us

+86-21-58386189

Antenna Theory

Antenna Theory

+

Helical antenna is an example of wire antenna and itself forms the shape of a helix. This is a broadband VHF and UHF antenna. Frequency Range. The frequency range of operation of helical antenna is around 30MHz to antenna works in VHF and UHF ranges.. Construction .

Scientific calculator

Scientific calculator

+

Or you can get really small numbers by using negative powers like 10^5= e stands for exponent and is used to represent "times 10 raised to the power of" (x 10^n). For example, if you want the number as a scientific notation, you enter 10, then click SN, then 7, and then equals (10eX10^7=). ...

Fiber Optics: Understanding the Basics | Fiber Optics ...

Fiber Optics: Understanding the Basics | Fiber Optics ...

+

Watch a video definition of total internal reflection. Modes When light is guided down a fiber (as microwaves are guided down a waveguide), phase shifts occur at every reflective boundary. There is a finite discrete number of paths down the optical fiber (known as modes) that produce constructive (in phase and therefore additive) phase shifts that reinforce the transmission.

MartinLogan | Motion 40i

MartinLogan | Motion 40i

+

Motion 40i Floorstanding Speakers. The secret to Motion 40i's outstanding performance lies in its Folded Motion® tweeter, aluminum cone midrange driver, dual aluminum cone woofers with a rearfiring bass port, and a proprietary Vojtko crossover network. This double woofer design produces vibrant, accurate deep bass performance.

Humanoid Robots | ScienceDirect

Humanoid Robots | ScienceDirect

+

Description. Humanoid Robots: Modeling and Control provides systematic presentation of the models used in the analysis, design and control of humanoid robots. The book starts with a historical overview of the field, a summary of the current state of the art achievements and an .

System Throughput, f/#, and Numerical Aperture | Edmund .

System Throughput, f/#, and Numerical Aperture | Edmund .

+

System Throughput, f/#, and Numerical Aperture. This is Section of the Imaging Resource Guide. The f/# (pronounced "Fnumber") setting on a lens controls overall light throughput, depth of field (DOF), and the ability to produce contrast at a given resolution. Fundamentally, f/# is the ratio of the focal length, (f) ( f), of the lens ...

Rocket Nose Cone Science | Science project |

Rocket Nose Cone Science | Science project |

+

Attaching the parabola nose cone to the rocket proved to be the best way to reduce the drag on the rocket and allow it to stay in the air the longest. It had an average of seconds in the air. The second best nose cone was the cone, with an average of seconds. The third best nose cone was the hemisphere with an average of seconds.

Do My Programming Homework

Do My Programming Homework

+

Do My Programming Homework is a significant portion of computer studies.. In the event you're one of the students who is seeking professional and authentic guidance about the subject, your wait ends at us. We provide you best programming assignment help by coing your programming projects, conducting your online programming exams, and many more.

Pipes and Pipe Sizing | Spirax Sarco

Pipes and Pipe Sizing | Spirax Sarco

+

In this case, a 40 mm pipe is too small, and a 50 mm pipe would be used. It is worth noting, however, that if the pipe run is particularly long and in exposed conditions, it is worth checking the running load of the pipe covered in Module – "Steam consumption of pipes and air heaters".

The Role of Sketching in the Design Process

The Role of Sketching in the Design Process

+

Apr 19, 2008 · Web Design from Scratch is a wellknown Web site that offers practical advice on building Web sites. In the article The Complete NoNonsense Guide to Designing Websites, the author has this to say about pencil sketching layouts: "The quick pencil sketch just helps me quickly record the likeness of what I've visualized in my I don't forget and can make it up quickly in Photoshop.

The Rods and Cones of the Human Eye

The Rods and Cones of the Human Eye

+

"Blue" Cone Distinctions. The "blue" cones are identified by the peak of their light response curve at about 445 nm. They are unique among the cones in that they constitute only about 2% of the total number and are found outside the fovea centralis where the green and red cones are concentrated. Although they are much more light sensitive than the green and red cones, it is .

The Geopolitics of Brazil: An Emergent Power's Struggle ...

The Geopolitics of Brazil: An Emergent Power's Struggle ...

+

May 13, 2012 · The Grand Escarpment comes right down to the ocean throughout the Brazilian southern coast. Brazil's cities, therefore, are forced to develop on small enclaves of relatively flat land in the few areas where the escarpment has not pushed all the way to the sea. The lack of a coastal plain means no small cities can form between the major cities.

Golden Circle model: Sinek's theory value proposition ...

Golden Circle model: Sinek's theory value proposition ...

+

Jun 11, 2021 · Sinek's theory is that communiing 'Why' taps into the part of the listener's brain that influences behavior. This is why the Golden Circle model is considered such an influential theory of leadership. At an organizational level, communiing you're 'Why' is the basis of a strong value proposition that will differentiate your brand from others.

Surface Area of a Cone (examples, solutions, worksheets ...

Surface Area of a Cone (examples, solutions, worksheets ...

+

** Surface Area of a Cone** A cone is a solid with a circular base. It has a curved surface which tapers ( decreases in size) to a vertex at the top. The height of the cone is the perpendicular distance from the base to the vertex. The net of a solid cone consists of a small circle and a sector of a larger circle. The arc of the sector has ...

Native American music

Native American music

+

Repetition is an important design element in South American Indian musics and may involve the repeat of small motifs within a melodic phrase as well as the repetition of an entire section within a piece. South American Indian musics fall into four main geographic areas: Andean Highlands, Tropical Forest, Southern Cone, and circumCaribbean.

Understanding Loudspeaker Data | Eminence Speaker

Understanding Loudspeaker Data | Eminence Speaker

+

Understanding Loudspeaker Data. The ability to choose the most appropriate loudspeaker for a particular enclosure is directly related to your understanding of the performance data that manufacturers provide with their products. Prior to 1970, there were no easy or affordable methods accepted as standard in the industry for obtaining this data.

Slope Inclinometers |

Slope Inclinometers |

+

Geotechnical instrumentation is a critical part of every construction project as it provides vital information about the insitu behavior of the ground. Instrumentation methods highly depend on the substratum and groundwater conditions. The instruments utilized are also impacted by the design methods and the compatibility of a project.

How it Works: Crushers, Grinding Mills and Pulverizers ...

How it Works: Crushers, Grinding Mills and Pulverizers ...

+

Jun 02, 2017 · Table Source: Wikipedia (Crushers) Cone crushers use a spinning cone that gyrates in the bowl in an eccentric motion to crush the rock between the cone surface, referred to as the mantle, and the crusher bowl crushers are very similar to cone crushers, but have a steeper cone slope and a concave bowl surface. As the gap between the bowl liner and the mantle narrows, the .