Asking the question, “how many lumens is the sun” is a roundabout way of assessing the brightness of other light sources by declaring a baseline of visible light. By definition, a lumen is “a unit of luminous flux equal to the light emitted in a unit solid angle by a uniform point source of one candle intensity”. With this said, assessing how many lumens the sun emits is really a variation of other questions. Like, for example, how much light is being emitted at any one point in time.

Next, we need to consider what a watt is and what it has to do with a lumen. In short, a watt is energy used to convert light (or lumens). Now, we will not go into a long mathematical equation with various types of rays and wavelengths. Instead, simplify it to the calculation that the sun can produce approximately “93 lumens per watt of radiant flux”. If you have ever, as a child, tried to stare into the light of a 60 watt light bulb, even that is difficult.

Essentially, the science behind the calculation of the various light waves brings many questions with some not so simple answers. These light waves can include x-rays, gamma rays, cosmic, infrared, radio, microwave, the list goes on. However, when it comes to visible light and the question of lumens, remember that the amount of light seen is all that matters.

How Many Lumens Is Dangerous?

Questions like this may seem irrelevant, but it is a valid question when shopping for various types of lights. As few as 60 watts is enough to blind someone temporarily. Several factors make light dangerous. For example, blue LED Lights with a lower number of lumens can be just damaging. A research report from Medical Xpress stated, “the ‘blue light’ in LED lighting can damage the eye’s retina and disturb natural sleep rhythms”.

This brings us to the next question, what is the difference between LED lighting and regular lighting? Take, for example, when you go to your local hardware store to purchase lightbulbs. You will be met with the option of purchasing incandescent watt bulbs versus the LED watt bulbs. Essentially, the LED watt bulbs use energy more efficiently to produce just as much visible light (lumens) as the incandescent.

You certainly want to be able to see any area in your home with ease. Some areas of use require more bright light to see whatever it is in detail. However, consider the lumens of your flashlights and other bright lights to ensure there is enough visible light to complete your task without accidentally damaging eyesight.

Is 2200 Lumens Bright Enough?

Light meterThe answer to this question lies entirely on what the purpose of what this luminosity is for. For example, would 2200 lumens be bright enough for an outdoor or indoor projector? This would depend on if you are using a projector that is over ten feet wide. Furthermore, in an area with some light peeking through it. Then 2200 lumens would be sufficient to get a clear view of the picture projected. Though, it’s a whole other ballpark if you are trying to project at a greater distance in more sunlight. In that case, you really would need a projector with a greater luminosity.

When considering how many lumens are suitable to produce a good amount of visible light, consider the area in question. As mentioned before, when staring into 60 lumens, partial blindness can occur. However, when considering indirect light and certain spaces in the home, you want the total space to be well lit. For example, you wouldn’t want the surface of your kitchen to be dimly lit. In this space, you want at least 3000 to 4000 lumens.

How Many Lumens Will Permanently Blind You?

When purchasing a light for your home, you are likely not concerned with the lightbulb blinding you in any capacity. However, it’s a different case when searching for a high lumen flashlight. Here, it is important to consider the potential result should someone look directly into that light. Further, think about what you are using this light source for. For example, if you use this light as one for personal defense, the purpose is to blind your attacker while you get away.

Self-defense flashlights should be at least 300 lumens to temporarily blind and disorient an attacker, while tactical flashlights can put out over 4, 000 lumens. While there is no clear data for a certain lumen number that causes permanent blindness, many studies indicate constant peering into powerful light, such as those mentioned, can cause permanent damage and temporary blindness.

How Many Lumens of Sunlight Hit the Earth?

According to NASA, approximately 1360 watts per square meter of sunlight reaches the earth’s surface each day. When considering how many lumens this translates to, a little math is involved. If a typical incandescent 25-watt bulb converts into 325 lumens per square meter, we can assess that sunlight has over seventeen thousand lumens.

NASA gives the following example to put this amount of energy into perspective: “Incandescent light bulbs radiate 40 to 100 watts. The Sun delivers 1,360 watts per square meter. An astronaut facing the Sun has a surface area of about 0.85 square meters, so he or she receives energy equivalent to 19 60-watt light bulbs.” Further, considering that the sun is around 92 million miles away gives one the idea of how powerful sunlight truly is.

Final Thoughts

In the grand spectrum of visible sunlight, many variables can calculate a constant and ongoing change of numbers. Further, there are many factors to consider when on the search for various visible light producing products. From projectors to flashlights, to self-defense products, to how many lumens are needed to light a certain space in your home.

Overall, gathering a baseline for how many lumens the sun produces gives the marketing world a spectrum to gauge their brightness products. At the end of the day, we hope that your questions have been answered.

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