Global Shutters

global shutters

    global shutters
  • (Global Shutter) Way to operate a sensor such that all pixels are exposed to light simultaneously. Signal is stored in pixel until the pixel is addressed. As opposed to Rolling ShutterTop

  • (Global Shutter) In digital video cameras, CCD sensors use a Global Shutter which exposes the entire imager simultaneously. The entire frame is exposed and begins gathering light field by field.

global shutters - 72" Diameter

72" Diameter Ceiling Fan With Adjustable Shutters

72" Diameter Ceiling Fan With Adjustable Shutters

72" ENCLOSED CEILING FAN Ideal for cooling employees, machinery or livestock, this ceiling fan can be used in any environment. This industrial quality ceiling fan ventilates a floor area of over 6,000 sq. ft. and used on ceiling up to 40'H. Industrial ceiling fan provides an air throw of 100' on both sides. Variable speed motor is 3HP or 2.2KW on high and .3KW on low (when using 230/460V). Belt drive motor runs up to 300 RPM with an excess of 55,000 CFM cooling. 72" diameter ventilation fan includes 6 fan blades enclosed in white fiberglass housing. Ceiling fan has 6 steel adjustable directional fins with a white powder coat finish that provide a wide cooling area of up to 200' x 35' coverage. Horsepower rating based upon maximum speed/load.

76% (17)

Glacier, Ladakh, Jammu & Kashmir, India - 01.09.09

Glacier, Ladakh, Jammu & Kashmir, India - 01.09.09

Camera Model Name: Canon EOS 400D DIGITAL
Lens: EF-S18-55mm f/3.5-5.6
Tv (Shutter Speed): 1/200
Av (Aperture Value): 11.0
Metering: Evaluative Metering
ISO Speed: 100
Focal Length: 31.0 mm
Flash: Off

DAY 16

Distance & Time: By car - 86 km / 3 hrs.

The two words that make up the name of the spectacular glacier that is slightly away from where we stand can be translated to have multiple meanings in Tibetan language. One closest to my liking is “straight in his presence”. It is spread over several kilometers before twisting to disappear at the bend behind the huge wall of rock. That area is heavily cloaked in mist preventing visibility and perhaps the source point of generation of the forceful wind that lashes against us.

Along the crazy road and the deep plunge to the surface of the glacier, there is no barrier. Everything around is bleak and arid. The mountains on all sides stark and forbidding, lacking any sign of habitation.

Compelling moment of madness forces to discard factors such as cracks, crevices, complete lack of training, absence of gears and equipments to look beyond the mountain bend. Observed earlier in a road sign, which read, “Leave nothing behind, even your footprints.” The overwhelming desire to do the same is gripping, to disappear in the mist without leaving behind any trail. The cautious, less impulsive and levelheadedness of my travel mate helps in vanquishing the thought.

Outside the Polar Regions the greatest glacial concentration occurs in the Trans-Himalayas, Greater Himalayas and southern Tibet. With an estimated 475 small and large glaciers, it is one of the largest reserves of water in form of ice and snow.

Physically and technically collecting and collating scientific evidence on retreating glaciers of the Himalayas was near impossible and technically difficult until recently. Optically stimulated luminescence and cosmogenic nuclide surface exposure dating methods have enabled glaciologists to determine the age of many glaciers and the Himalayan glaciations period.

Enough evidence points towards the conclusion that in current times the glaciers of the Himalayan region are under environmental threat. China is the only country in the region, which has been conducting long-term mass balance studies of some glaciers. A research team from the country verified a couple of years ago that approximately about 5% of glacier retreat has occurred of the 20 glaciers they have been studying for past 45 years in Tibet Himalayas except for one.

Glaciers are a result of accumulation and transformation of snowfall over a number of years, which are extremely vulnerable and fragile; they react in a complex way to climate variations. In 21st century the rapid rate of glacial retreat has been a cause of considerable alarm. It is accepted in the expert community that anthropogenic causes have most likely caused the escalation of earth temperature to 2.4? C / 36.32? F compared to the pre-industrial surface temperatures. This is impacting the glaciers.

The studies of length, breadth, mass balance, growth and shrinkage are visible indicators of how healthy a glacier is. There is a line of snow accumulation that demarcates the zone above which no melting takes place, this is known as AAR or accumulation area ratio. When the AAR begins to shrink, it can be concluded that a glacier is in recession.

Survey conducted by a foreign NGO in the villages of Ladakh for a period of 65 years in addition to meteorological data collected and analyzed by them reveals that there has been an estimated temperature rise of 1? C / 33.8? F during the winter months coupled with a sharp decline in snowfall and increase in mean summer temperatures. Glaciologists are in agreement that rise of 1? C / 33.8? F in temperature result alpine glaciers to shrink as much as 40% in area and 50% in volume and the Himalayan glaciers are retreating at the rate ranging from 10-60m / 32.8-196.8 ft. per year. An increase in summer air temperature not only enhances ice melt but also significantly reduces the accumulation by altering snowfall according to rainfall.

The ‘Atmospheric Brown Cloud’ phenomena explains that in addition to greenhouse gases like carbon dioxide, other climate warmers like methane, halocarbons and black carbon soot rises and envelops the atmosphere in a haze; these are eventually washed down by the rainfall to darken glaciers. Many glaciologists are not only worried at the presence of black carbon particles on glaciers even at a

Global Motorization

Global Motorization

Dhaka is a mega city having a population of 12 million. The fast growing economical growth increasing the number of motor vehicles geometrically and at present which is around 1.4 million in numbers.

Besides consolation the urban motorization is providing us air pollution and extreme traffic congestion. The city's average SPM levels are about 2 times higher than the Bangladeshi standard of 200 µg/m3 in residential areas and are more than 10 times higher than the WHO guidelines of 120 µg/m3 (24 hours) in commercial areas. Lead levels are also high compared to other cities in the world.

global shutters

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