Sunlight, in the broad sense, is the total
frequency spectrum of
electromagnetic radiation given off by the
Sun. On
Earth, sunlight is
filtered through the
Earth's atmosphere, and
solar radiation is obvious as
daylight when the Sun is above the
horizon.
When the direct solar radiation is not blocked by clouds, it is experienced as
sunshine, a combination of bright light and
radiant heat. When it is blocked by the clouds or reflects off of other objects, it is experienced as diffused light.
The
World Meteorological Organization uses the term "sunshine duration" to mean the cumulative time during which an area receives direct
irradiance from the Sun of at least 120
watts per square
meter.
[1]
Sunlight may be recorded using a
sunshine recorder,
pyranometer or
pyrheliometer. Sunlight takes about 8.3 minutes to reach the Earth.
Direct sunlight has a luminous efficacy of about 93
lumens per watt of
radiant flux, which includes
infrared,
visible, and
ultraviolet light. Bright sunlight provides
illuminance of approximately 100,000
lux or
lumens per square meter at the Earth's surface.
Sunlight is a key factor in
photosynthesis, a process vital for
life on Earth.
so there you go if you got a 1000 watt producing 110,000 lumens per Sq meter your giving same as sunlight
) as per lumens