At zenith, sunlight provides an irradiance of just over 1 kilowatt per square meter at sea level.

If this energy is divided by the recording time in hours, it is then a density of power called irradiance, expressed in watts per square metre (W m2).

The flux unit or jansky (symbol Jy) is a non SI unit of spectral flux density, or spectral irradiance, equivalent to 10 26 watts per square metre per hertz.

This makes the Venusian surface hotter than Mercury's, which has a minimum surface temperature of and maximum surface temperature of , even though Venus is nearly twice Mercury's distance from the Sun and thus receives only 25 of Mercury's solar irradiance.

A pyranometer is a type of actinometer used to measure broadband solar irradiance on a planar surface and is a sensor that is designed to measure the solar radiation flux density (in watts per metre square) from a field of view of 180 degrees.

Were the support materials effective and appropriate? Were the trainers effective?

Effective Altruism

Effective date

Effective measures

Effective date

Links in the effective administration, effective governance and effective participation cycle so critical to good government are promoted in important ways.

Australia Effective from 23 June 2004 Portugal Effective from 28 June 2004.

CORRUPTION HOW EFFECTIVE?

Any effective foreign policy clearly needs to rely on effective military and civilian resources.

Effective 1 March 2001

Effective 1 January 2003

Effective 1 January 2005

Effective 1 September 2004

Effective 1 September 2004

Effective 1 May 2004

Effective 1 May 2004

Effective 1 May 2004

(i) Effective customer identification?

Effective 1 April 2005

Effective 16 May 2005

Effective web marketing strategies

Prepare effective advocacy strategies.

effective exchange of information

Unfortunately, inspiration, too, requires the threat of effective military power to be an effective force for change.

Outcomes plotted in Quadrant I are more effective and more expensive, those in Quadrant II are more effective and less expensive, those in Quadrant III are less effective and less expensive, and those in Quadrant IV are less effective and more expensive.

Outcomes plotted in Quadrant I are more effective and more expensive, those in Quadrant II are more effective and less expensive, those in Quadrant III are less effective and less expensive, and those in Quadrant IV are less effective and more expensive.

Global Warming s Cheap, Effective Solution

How Effective is Disaster Relief?

Immunization is also highly effective.

But effective display is costly.

Each can be very effective.

Effective national machinery and publicity

Our aid is effective aid.

Right to an effective remedy

Right to an effective remedy

Rapid and effective deployment capacities

Towards more effective international cooperation

To be effective, such laws must be supported by efficient and effective judicial systems and other enforcement mechanisms.

Australia considers that integrated IAEA safeguards are essential to the effective and cost effective implementation of strengthened safeguards.

1.12 Effective implementation of paragraph 2 (g) of the resolution requires States, inter alia, to have effective border controls.