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  Glossary of Terms

BALLAST - A sometimes complex device intended to limit the amount of current in an electrical circuit.

CARBON FOOTPRINT – Measure of the impact human activities have on the environment in terms of the amount of Greenhouse Gases produced.

COBRA HEAD – A type of street light. Refers to the shape of the light unit in comparison with a cobra snake's head.

ERGONOMIC – Designed based on human needs by applying theory, principles, data and methods to design in order to optimize human well-being and overall system performance.

FLUORESCENT LIGHT – Is a gas-discharge lamp that uses electricity to excite mercury vapour. The excited mercury atoms produce short-wave ultraviolet light that then causes a phosphor to fluoresce, producing visible light. Fluorescent lamps require a ballast to regulate the flow of power through the lamp.

GREENHOUSE GASES - Many chemical compounds are found in the Earth's atmosphere that act as "Greenhouse Gases." Some occur naturally such as methane but others are the result of human activity (industrial gases). These gases do not hinder the sunlight from entering the atmosphere but the problem begins when sunlight hits the Earth's surface, some of it is re-radiated back up towards the atmosphere as infrared radiation (heat). The Greenhouse Gases absorb and trap the heat in the atmosphere. If the amount of Greenhouse Gases remains stable the Earth's surface temperature should remain relatively constant.

HALOGEN LIGHTING – A halogen lamp is a type of incandescent lighting. They come in a wide range of wattages and are known for being very hot. A halogen bulb may have to cool for up to an hour before it can be touched. Also any surface contamination, notably fingerprints, can damage the bulb so when it is turned on the heat generated can cause it to explode.

LED – Abbreviation for Light Emitting Diode. The most economical and environmentally friendly type of lighting available. The light produced is a "truer" light that is pleasing to the eyes and shows colour more accurately.

SODIUM VAPOUR LIGHTS – A gas discharge lamp which uses sodium in an excited state to produce light. These lamps produce a virtually monochromatic light resulting in illuminated objects not being easily distinguished since they are seen almost entirely by their reflection of this narrow bandwidth orange light.

LUMENS – Unit for measuring the rate of emission or transmission of light rays from a given light source.

MERCURY – A chemical element, a heavy, silvery d-block metal, mercury is one of six elements that are liquid at or near room temperature and pressure. Mercury is used in thermometers and barometers though concerns about the element's toxicity have led to mercury thermometers being largely phased out in clinical environments. Mercury is also used in fluorescent lamps. Electricity is passed through mercury vapor to produce short-wave ultraviolet light which then causes the phosphor coated on the inside of the tube to fluoresce, making visible light. Mercury poisoning may result from exposure or inhalation of mercury vapour.

HIGH BAY LIGHT – Large lighting fixtures used in high ceilings such as warehouses, manufacturing facilities and arenas.

INCANDESCENT LIGHTING – Standard light bulb, source of electric light that works by incandescence or heat driven light emission. An electric current passes through a thin filament, heating it until it produces light. The enclosing glass bulb prevents the oxygen in air from reaching the hot filament, which otherwise would be destroyed rapidly by oxidation. COMPACT FLUORESCENT LIGHTING - replace the current standard light bulbs.

LEED – The Leadership in Energy and Environmental Design (LEED) Green Building Rating SystemTM encourages and accelerates global adoption of sustainable green building and development practices through the creation and implementation of universally understood and accepted tools and performance criteria.

LIGHT POLUTION – Unwanted or wasted light also known as Sky Glow.

LOW BAY LIGHT – Large lighting fixtures use in lower ceilings where the mounting of the fixtures will measure 20 feet from the surface it is illuminating.

PERIMETER SECURITY LIGHTING – Bright exterior lighting illuminating parking lots and paths providing security.

PHOSPHOROUS – a common, non-metallic chemical element. There are three types of phosphorous, white (poisonous, highly flammable and luminous in the dark), red (non poisonous and less flammable), black phosphorous (most table form).

POWER SUPPLY – Or Power Supply Unit (PSU) is a device that supplies electrical power.

RoHS – Abbreviation for Restriction of Hazardous Substances Directive.

RETROFIT – Replacing old technology with newer within original parameters or space.

SAD - Seasonal Affective Disorder, commonly known as winter depression is a form of recurrent depressive disorder characterized by increased appetite, weight gain, increase sleep and fatigue.

HERMAL MANAGEMENT - The removal of heat from a light fixture through advanced engineering and design.

Whats New
Jan 28, 2014:
ProTerra InfoTech Break – ProTerra Lighting Completes Successful Installation at Syl Apps Community Centre in Paris, Ontario, Canada
July 9, 2012:
ProTerra Info Tech Break - LED
Lighting Offers Major Health Benefits
July 4, 2012:
ProTerra Info Tech Break - What to do when a bulb containing mercury breaks? 
ProTerraLED International launches its U.S. headquarters at The Tech Garden
May 19, 2011
New CNY Companies Make a Better Light Bulb Ephesus Technologies, ProTerra LED, Group4 Labs Produce New LED Lighting
April 22, 2011:
Covent Garden installs ProTerra LED new 1,000 watt HID equivalent high bay light
February 28, 2011:
International Clean Tech Companies See Syracuse as “Launch Pad” to Growth Companies to Create 112 Jobs
Energy 2009 Lean and Green Conference
The Expositor - St.George firm touted for role in 'green' future.
The Expositor - Great green initiatives are happening right here.
2009 Statements in the House - Renewable Energy
Leasing Warranty Testimonials Sustainability
Glossary of Terms
LED Related Studies and Articles
Health Benefits
Energy Saving Links
Career Opportunities
IES Files
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