A functional light, for example, requires a higher colour temperature, while the optimal mood lighting has a lower temperature grade. We are renowned for our excellence in product packing meaning your bulbs arrive in perfect condition.

The candela (cd) is the standard unit of luminous intensity or brightness of a light in a specific direction. Therefore, based on the figure, we can get the result which are the maximum and minimum voltage for the output LEDs only.The living room probably deserves several separate light sources equipped with high wattage bulbs, but a small storage room would be better served with less luminous bulbs. Choosing the right colour temperature and lumen is crucial for the feeling of well-being in your home, so we have taken a closer look at the concepts of kelvin and lumen and written a handy guide for you so you can find the best light bulb for your favourite lamp. Check out this infographic by Energy Star to help you see the benefits of choosing an Energy Star certified bulb. Energy companies use watts to track the amount of electricity we use in Kilowatts per hour (kWh), which is 1,000 watts of power over one hour of use.

Even though you will use this light as your primary source, make sure that the rest of your room is illuminated sufficiently. However, perspectives are changing with the constant evolution of LED technology, which offers lower wattages without sacrificing lumens, or brightness. Brightness depends on resistance in a sense: if you know the resistance you can calculate power from voltage or current. The “useful lumen” rating is normally lower than the total lumen output but has more relevance to a spotlight bulb where useful light is in a forward focussed direction. Discover the ZET Modern LED Desk Lamp - a versatile lighting solution with adjustable brightness and three color temperature options.This type of lighting has the ability to produce a higher register of lumens for fewer watts, and they present fewer risks overall. While reading through a screen for long hours can be heavily damaging for the eyes, there are ways in which you can try to ensure you don’t end up with glasses within a few years.

I’ve tried using a single A19 white and colour bulb in each (1100 lumens), but they aren’t nearly as bright as I’d like. The soft and soothing light creates a cozy atmosphere, perfect for bedtime reading or as a nightlight.Also, a different (lighter or more translucent or different shaped) shade may let more light get to where you want it. Used by Facebook to deliver a series of advertisement products such as real time bidding from third party advertisers. The more lamps and bulb sockets you put into your home, the higher your monthly bills will be and higher wattage bulbs only add to it by spending more energy.

Its compact footprint makes it perfect for small spaces, while its premium finish adds a touch of elegance to your room. With a directional bulb such as GU10 spotlight, the light is emitted in many directions, some of this light (spill light) may not be useful but it is counted in the total lumen rating. Reading is an important activity in one’s life, and if done incorrectly it can be quite harmful to the eyes in the long run. Look for something around 3000K; if the CCT number isn't there, look for "warm white" as opposed to "cool white".wide clamp that can opens to 5cm will take up very little space on the desktop and make the table more tidy; The whole body is about 50cm long, of which gooseneck is about 38cm long, of which usb cable is approx 150cm long.