I don't think there is an "easy way", not if you mean "home-made easy". You need devices to measure the amount of light produced (in lumen), and to measure the amount of power used. Then you would have to divide the first by the second, to obtain lumen/watt.
Efficiency is typically associated with minimizing losses in a circuit. If you have no load you couldn't compute efficiency. If there is a load you need to determine what you are trying to measure. For example, in an incandescent light bulb a lot of power is wasted in heat. So if light is what you are looking for an incandescent bulb isn't very efficient. A compact fluorescent would be more efficient. However, if you were using a light bulb to power an "Easy Bake" oven it would be more efficient.
Photometers are used to measure the intensity of light and are commonly used in scientific research, industrial processes, and environmental monitoring. They offer high accuracy and sensitivity in measuring light levels, allowing for precise analysis and monitoring of light sources. Photometers are also portable and easy to use, making them convenient for field studies and on-site measurements.
Installing a LED ceiling light with a pull chain in a room offers benefits such as energy efficiency, long lifespan, bright illumination, and easy accessibility for turning the light on and off.
When choosing an outdoor wall sensor light, consider features like motion detection, adjustable sensitivity and range, weather resistance, energy efficiency, and easy installation.
If you want to measure the speed of something, you first have to recall that speed is (distance traveled) divided by (time to travel the distance), and then you realize that you have to measure the distance it travels and the time it takes to travel that distance. If it happens to be the speed of light, then you immediately have a serious problem. The speed of light is so great that ... -- If you pick a distance that's easy to measure, then the time is impossibly short. For example, if you pick ten miles, then you have to accurately measure 0.00005368 of one second, which is pretty tough. -- If you pick a time that's easy to measure, then the distance is ridiculously long. For example, if you pick 0.1 second, then you have to accurately measure 18,628.2 miles, which is enormously tough. Both of these methods are theoretically and technically perfect, and completely impossible to actually use for the speed of light. You have to invent whole new clever ways to measure speed.
See sources and related links for an easy place. Just enter the make, model and year of your vehicle and it will list them towards the bottom.
The benefits of using a wireless ceiling light in your home include easy installation without the need for wiring, flexibility in placement, remote control options for convenience, and energy efficiency through the use of LED technology.
Using a wireless porch light for home security and convenience offers benefits such as easy installation without the need for wiring, remote control access, motion detection for added security, and energy efficiency.
Installing add-on blinds for doors in your home can provide benefits such as increased privacy, light control, and energy efficiency. They can also enhance the aesthetics of your space and are easy to maintain.
Track light systems offer several benefits for home lighting, including flexibility in directing light to specific areas, easy installation and customization, energy efficiency through the use of LED bulbs, and the ability to create a modern and stylish look in any room.
Interference effects are not easily observed in light waves because they require precise conditions such as coherent sources and a controlled environment without disturbances. Any variation in the sources or the medium can disrupt the interference pattern, making it difficult to observe in everyday situations. Additionally, the wavelength of light is very small, making the interference effects more challenging to detect without specialized equipment.
Some times these words/phrases like speed/efficiency/effectiveness/productivity are our own judgment because we are not there where customer are view web pages. I would go for a script language in terms of it's easy of use for both developer and client, customers than it's speed/efficiency. Speed/efficiency is automatic if it is easy of use for all.