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Haze refers to a sativa-dominant Cannabis strain. Haze has high THC content and is known for its psychedelic effects, sometimes referred to colloquially as "ampheta-weed" for their uplifting qualities. Haze is the parent to very many prized subset strains.

Subset strains[link]

See Cannabis Cup for High Times references.

• Amnesia Haze - High Times Overall Cannabis Cup (2004) #1
• Arjan's Schoenmaker Zwervers Ultra Haze#1 - High Times Cannabis Cup (2006) #1
• Arjan's Schoenmaker Zwevers Ultra Haze 2 - High Times Cannabis Cup (2005) #2
• Arjan's Strawberry Haze - High Times Sativa Cup (2004) #2
• Arjan's Ultra 2 Haze - High Times Nederhash Cup (2005) #3
• Brainstorm Haze
• Bubble Berry Haze
• Cannalope Haze
• DeLaHaze - High Times Sativa Cup (2008) #2
• Electric Lemon Haze - High Times Sativa Cup (2011) #2
• Fire Haze
• G13 Haze - High Times Cannabis Cup (2006) #2, High Times Cannabis Cup (2007) #1
• Hawaiian Haze
• Haze (or Original Haze)
• Lemon Haze
• Liberty Haze - High Times Cannabis Cup (2011) #1
• Mako Haze - High Times Sativa Cup (2006) #1
• Moonshine Haze - High Times Sativa Cup (2011) #1
• Northern Ligths -High Times Cannabis Cup (2003) #1
• Silver Haze - High Times Overall Cannabis Cup (2005) #3
• Super Lemon Haze - High Times Cannabis Cup (2008, 2009) #1, 2010 #2. High Times Sativa Cup (2009) #1
• Super Silver Haze - first prize winner at the High Times Cannabis Cup in 1997, 1998 and 1999 and also won awards at the High Times harvest festival
• Tasman Haze - High Times Sativa Cup (2007) #2
• Utopia Haze - High Times Cannabis Cup (2008) #2
• Utopia Haze - High Times Sativa Cup (2008) #1

See also[link]

Cannabis portal

• Cannabis sativa
• Medical cannabis

This psychedelics, dissociatives and deliriants-related article is a stub. You can help Wikipedia by expanding it. v t e

Haze over Kuala Lumpur.

Los Angeles skyline, showing haze.

Haze over the North China Plain.

Haze obscuring the Faisal Mosque in Islamabad.

Haze is traditionally an atmospheric phenomenon where dust, smoke and other dry particles obscure the clarity of the sky. The World Meteorological Organization manual of codes includes a classification of horizontal obscuration into categories of fog, ice fog, steam fog, mist, haze, smoke, volcanic ash, dust, sand and snow.^[1] Sources for haze particles include farming (ploughing in dry weather), traffic, industry, and wildfires.

Seen from afar (e.g. approaching airplane) and depending upon the direction of view with respect to the sun, haze may appear brownish or bluish, while mist tends to be bluish-grey. Whereas haze often is thought of as a phenomenon of dry air, mist formation is a phenomenon of humid air. However, haze particles may act as condensation nuclei for the subsequent formation of mist droplets; such forms of haze are known as "wet haze."

In the United States and elsewhere, the term "haze" in meteorological literature generally is used to denote visibility-reducing aerosols of the wet type. Such aerosols commonly arise from complex chemical reactions that occur as sulfur dioxide gases emitted during combustion are converted into small droplets of sulfuric acid. The reactions are enhanced in the presence of sunlight, high relative humidity, and stagnant air flow. A small component of wet haze aerosols appear to be derived from compounds released by trees, such as terpenes. For all these reasons, wet haze tends to be primarily a warm-season phenomenon. Large areas of haze covering many thousands of kilometers may be produced under favorable conditions each summer.

Air pollution[link]

Haze often occurs when dust and smoke particles accumulate in relatively dry air. When weather conditions block the dispersal of smoke and other pollutants they concentrate and form a usually low-hanging shroud that impairs visibility and may become a respiratory health threat. Industrial pollution can result in dense haze, which is known as smog.

Since 1991, haze has been a particularly acute problem in Southeast Asia, Indonesian forest fires burnt to clear land being the reason. In response the 1997 Southeast Asian haze, the ASEAN countries agreed on a Regional Haze Action Plan (1997) and later signed the Agreement on Transboundary Haze Pollution (2002) however the pollution is still a problem today. Under the agreement the ASEAN secretariat hosts a co-ordination and support unit.^[2]

In the United States, the Interagency Monitoring of Protected Visual Environments (IMPROVE) program was developed as a collaborative effort between the US EPA and the National Park Service in order to establish the chemical composition of haze in National Parks and establish air pollution control measures in order to restore the visibility to pre-industrial levels.^[3] Additionally, the Clean Air Act requires that any current visibility problems be remedied, and future visibility problems be prevented, in 156 Class I Federal areas located throughout the United States. A full list of these areas is available on EPA's website.^[4]

Obscuration[link]

Haze causes issues in the area of terrestrial photography, where the penetration of large amounts of dense atmosphere may be necessary to image distant subjects. This results in the visual effect of a loss of contrast in the subject, due to the effect of light scattering through the haze particles. For these reasons, sunrise and sunset colors appear subdued on hazy days, and stars may be obscured at night. In some cases, attenuation by haze is so great that, toward sunset, the sun disappears altogether before reaching the horizon. (see example).^[5] Haze can be defined as an aerial form of the Tyndall effect therefore unlike other atmospheric effects such as cloud and fog, haze is spectrally selective: shorter (blue) wavelengths are scattered more, and longer (red/infrared) wavelengths are scattered less. For this reason many super-telephoto lenses often incorporate yellow filters or coatings to enhance image contrast.

Infrared (IR) imaging may also be used to penetrate haze over long distances, with a combination of IR-pass optical filters (such as the Wratten 89B) and IR-sensitive detector.

See also[link]

• Arctic haze
• Asian brown cloud
• Coefficient of haze
• Saharan Air Layer
• Smog

Notes[link]

External links[link]

Wikimedia Commons has media related to: Haze

• National Pollutant Inventory - Particulate matter fact sheet
• Haze over the central and eastern United States
• Chemical Composition of Haze in US Natioanl Parks: Views Visibility Database

The HD ready is a certification program introduced in 2005 by EICTA (European Information, Communications and Consumer Electronics Technology Industry Associations), now DIGITALEUROPE.

There are currently four different labels: "HD ready", "HD TV", "HD ready 1080p", "HD TV 1080p". The logos are awarded to television equipment capable of certain features.

In the USA, a similar "HD Ready" term usually refers to any display that is capable of accepting and displaying a high-definition signal at either 720p, 1080i or 1080p using a component video or digital input, but does not have a built-in HD-capable tuner.

History[link]

The "HD ready" certification program was introduced on January 19, 2005. The labels and relevant specifications are based on agreements between over 60 broadcasters and manufacturers of the European HDTV Forum at its second session in June 2004, held at the Betzdorf, Luxembourg headquarters of founding member SES Astra.^[1]

The "HD ready" logo is awarded to television equipment capable of displaying High Definition (HD) pictures from an external source, however it does not have to feature a digital tuner to decode an HD signal; devices with tuners were certified under a separate "HD TV" logo, which does not require a "HD ready" display device.

Before the introduction of the "HD ready" certification, many TV sources and displays were being promoted as capable of displaying high definition pictures when they were in fact SDTV devices; according to Alexander Oudendijk, senior VP of marketing for Astra, in early 2005 there were 74 different devices being sold as ready for HD that were not.^[2] Devices advertised as HD-compatible or HD ready could take HDTV-signal as an input (via analog -YPbPr or digital DVI or HDMI), but they did not have enough pixels for true representation of even the lower HD resolution (1280 × 720) (CRT based sets only capable of SDTV-resolution or VGA-resolution, 640×480 pixels, or the plasma-based sets with 1024 × 768 resolution), lest the higher HD resolution (1920 × 1080), and so were unable to display the HD picture without downscaling to a lower resolution. Industry-sponsored labels such as "Full HD" were misleading as well, as they can refer to devices which do not fulfil some essential requirements such as having 1:1 pixel-to-pixel mapping with no overscan or accepting 1080p signal.

A UK BBC television programme found that separate labels for display devices and TV tuners/decoders confused purchasers, many of whom bought HD-ready equipment expecting to be able to receive HD with no additional equipment;^[3] they were sometimes actively misled by salespeople—a 2007 Ofcom survey found that 12% were told explicitly that they could view analog SDTV transmissions in HD, 7% that no extra equipment was needed, and 14% that HD-ready sets would receive existing digtial SDTV transmissions in HD.^[3]

On August 30, 2007, 1080p versions of the logos and licensing agreements were introduced; as an improvement to the earlier scheme, "HD TV 1080p" logo now requires "HD ready 1080p" certification.

Requirements and logos[link]

Logo for 720p televisions and set-top boxes

HD ready ^[4] and HD ready 1080p logos^[5][6] are awarded to displays (including integrated television sets, computer monitors and projectors) which have certain capabilities to process and display high-definition source video signal, outlined in a table below.

The HD TV logo^[7][8] is awarded to either integrated digital television sets (containing a display conforming to "HD ready" requirements) or standalone set-top boxes which are capable of receiving, decoding and outputting or displaying high-definition broadcasts (that is, include a DVB tuner for cable, terrestrial or satellite broadcasting, a video decoder which supports H.264/MPEG-4 AVC compression in 720p and 1080i signal formats, and either video outputs or an integrated display capable of handling such signals).

The HD TV 1080p logo^[5][9] is awarded to integrated digital television sets which have a display conforming to "HD ready 1080p" requirements, a DVB tuner and a decoder capable of processing 1080p signal.

In order to be eligible for the "HD ready 1080p" or "HD Ready" logo, a display device has to meet the following requirements:

Technical references

• DVI: DDWG, "Digital Visual Interface", rev 1.0, April 2, 1999 as further qualified in EIA861B, "A DTV Profile for Uncompressed High Speed Digital Interfaces" May 2002, furthermore allowing both DVI-D and DVI-I connectors, requiring compliance to both 50 and 60 Hz profiles, and requiring support for both 720p and 1080i video formats.
• HDMI: HDMI Licensing, LLC, "High-Definition Multimedia Interface", rev.1.1, May 20, 2004
• HDCP: Intel, "High-Bandwidth Digital Content Protection System", rev 1.1, June 9, 2003. (For DVI input, HDCP rev 1.0 will apply.)
• YP_BP_R: EIA770.3-A, March 2000, with the notice that the connectors required may be available only through an adaptor.

References[link]

External links[link]

• HD ready official UK website
• High Definition Television and Logos - EICTA
• EICTA: Broadcast
• License agreement and HD Ready 1080p requirements
• HD Ready 1080p press release
• DVDActive article - Are You Ready for HDTV?
• Full-HD-ready, really?! Not definitive!
• Pioneer Electronics - Learn About High Definition TV