Gold follows all characteristics of mineral
First: Its inorganic
Second: It occurs naturally
Third: Its a solid crystallized form
Fourth: It has consistent chemical composition
Fifth: It forms crystals
In a boiler, pitting is dangerous because it weakens the boiler plate by reducing its thickness and strength. A pit that reduces the boiler plate thickness (at its weakest point) to 1/4 of the original thickness will fail at its Maximum Allowable Working Pressure. The weakest point is typically at the longitudinal joint (welded or riveted boilers) and pitting, grooving and cracking at this joint is closely monitored in all boilers.
What is the proportional integral and derivative control system response?
The proportional integral and derivative control system or PID control system consists of proportionsl, derivative and integral elements which gives a very efficient process control.
answ2. Cones. Assuming you mean the optical colour sensors, these come in three colour sensitivities, (just known as Short, Medium, and Long) and these give us colour vision. You have about 5 million cone cells in each eye, and about 90 million rod cells.
The rod cells see only light, not colour, but are about 100 times more sensitive than the cones. This is why at night, you have inferior colour vision.
Your cone cells are grouped in the centre of your vision, the fovea, and you'll easily be able to see things at night, "out of the side of your eye" by looking slightly away from your subject of interest. In fact, you may even see a 'hazy region' in the middle of the field of view where there appears to be no definition. This is because the (inactive) cone cells dominate in this region.
Most animals have no colour vision, for it is of no advantage to them. Birds, bees and butterflies have excellent colour vision (Up to five colour sensors) for their ability to distinguish fruit ripeness is vital to them.
How do you identify EPDM rubber?
The best way is via infrared analysis. If you do not have any instrumentation available, you can burn a small piece of the rubber. When removed from the flame EPDM will give off a sooty smoke that smells waxy (like a burning candle).
What metric class of fit is f7?
f7 (yes, it really does matter whether you use an upper case or lower case letter) is a shaft tolerance, which is, generallyspeaking, used for close tolerance (clearance) fits.
But it depends on the size of the mating component.
What is a difference between b-15 lens on ray-ban glasses and polarized lens?
B-15 lens are brown in color and G-15 lenses are gray-green. Polarized lenses come in both colors and on the lens it's written Ray Ban P
How is rapid prototyping in China?
China's rapid prototyping industry has been developing very rapidly during last 2 decades. Some good rapid prototype makers emerged from themarket and gradually is gaining world reputation.Uidea Rapid Prototype China Co., Ltd. is one of leading players.
Originally, the Hongkong people andTaiwanness set upprototyping companies in China mainland, mainly inpearl river delta area, in the cities like Shenzhen, Dongguan and Guangzhou.Sincethe beginning of thiscentury, many local Chinese who usedtowork in HK or Taiwan rapid prototypingcompaniesstarted to found their own business.
Compared with rapid prototyping service in other countries, rapid prototyping in China still has significantly cost advantage, expecially the CNC machinied prototypes, vacuum casted protoypes, reaction injection molding,rapidtooling, rapid injection molding and extrusion prototyping. Uidea Rapid Prototype is one of the largest professionalintegrated rapid prototyping companies in China.
Remedies for industrial sickness?
Some remedies for industrial sickness are making sure that the employees are staying healthy and happy. You should also make sure that the company has good accounting practices, so as to minimize losses.
Why are some people opposed to fracking?
The naysayers maintain that it causes earthquakes, and releases so much flammable gas into the water table that tapwater will actually burn, causing health problems.
How long will the aswan high dam last?
The Aswan High Dam, completed in 1970, is designed for a long lifespan, potentially lasting for over 100 years with proper maintenance. However, factors such as sediment buildup, structural wear, and environmental changes could impact its longevity. Regular inspections and maintenance are crucial to ensure its continued effectiveness and safety. Ultimately, while it may last many decades, its operational lifespan will depend on ongoing management efforts.
Why Aluminium has no lower yield point like Mild Steel?
Aluminium does not have a distinct lower yield point like mild steel due to its face-centered cubic (FCC) crystal structure, which allows for more uniform plastic deformation. In mild steel, the body-centered cubic (BCC) structure results in a noticeable yield point due to the movement of dislocations being more restricted. As a result, aluminium exhibits a more gradual transition from elastic to plastic deformation, lacking a clear demarcation between yield and non-yield behavior. This characteristic makes aluminium behave differently under stress compared to mild steel.
when reading a blueprint, a general tolerance would apply for all dimensions that are not individually identified. eg, all tolerances are +\- .030" General tolerances are normally found in the information blocks of the blueprint. If for example a tighter tolerance is required, then a specific tolerance is noted for certain areas of the blueprint. These tolerances are normally found beside the affected area.
What the advantages of printed circuit Heat exchanger?
Printed circuit heat exchangers (PCHEs) offer several advantages, including high thermal efficiency due to their large surface area and compact design, which allows for effective heat transfer in a smaller footprint. Their robust construction and resistance to pressure and temperature variations make them suitable for demanding applications. Additionally, PCHEs can be customized for specific needs, enhancing their versatility in various industries. Their low maintenance requirements further contribute to operational efficiency and cost-effectiveness.
Why do large industrial buildings have high located glazing on the north side?
Large industrial buildings often feature high located glazing on the north side to maximize natural light while minimizing direct sunlight and heat gain. This orientation helps maintain a consistent and diffuse light quality, which is beneficial for workspaces without causing glare or excessive heat. Additionally, it can improve energy efficiency by reducing the need for artificial lighting during the day.
Why same size thread plug does not fit in same size thread ring gauge?
A thread plug gauge and a thread ring gauge, although designed for the same nominal size, serve different purposes and have different tolerances. The plug gauge is used to check internal threads, while the ring gauge checks external threads. Differences in manufacturing tolerances, lead angles, and thread profiles can cause a plug gauge to fit into a ring gauge even if they are both rated for the same size, leading to discrepancies in fit. Additionally, wear and deformation over time can affect how well the gauges interact.
Furnace is an enclosed fire place
show me parts of a coal fired furnace
How much does a concrete mixer cost?
A concrete mixer costs between $1,000 for a entry level model to over $10,000 for industrial models. These mixers are used extensively in construction.
Is Bernina 220 sewing machine made by Bernina or is it outsourced to another manufacturer?
The Bernina 220 is made in China in a Bernina factory. Which means it is a factory built by and owned by Bernina. The 220 features the same quality Bernina is famous for.
The Bernina Activa 220 is NOT built in China. It is manufactured in a Bernina-built factory in Thailand, opened by Hans-Peter Ueltschi personally. Unlike Singer, Viking, and so many others, these machines have strict quality control and strive to equal the full-size Swiss-made machines.
How much will a business administration person make a month?
You can make about $40,000 to $50,000 to start, it all depends on who you work for. And how fast you get promoted.
How has the aswan dam been harmful to people?
because Aswan Dam doesn't Like the Bad people because Aswan Dam likes The Good People