How do they make bulbs with a high (lumens) light output but low wattage? If there is a direct relationship between wattage and brightness that can be stated in a closed form
![R20 LED Flood Light Bulb, 8W (50W Equivalent), Dimmable, 460 Lumens, 3000k Soft White, E26 Medium Base, Energy Star (4 Pack) - - Amazon.com R20 LED Flood Light Bulb, 8W (50W Equivalent), Dimmable, 460 Lumens, 3000k Soft White, E26 Medium Base, Energy Star (4 Pack) - - Amazon.com](https://m.media-amazon.com/images/I/611c6sIwRNL.jpg)
R20 LED Flood Light Bulb, 8W (50W Equivalent), Dimmable, 460 Lumens, 3000k Soft White, E26 Medium Base, Energy Star (4 Pack) - - Amazon.com
![Linkind Dimmable A19 LED Light Bulbs, 5.7W 460 Lumens 40 Watt Equivalent(6 Pack) & 9.5W 800 Lumens 60 Watt Equivalent(6 Pack), E26 Base, 2700K Soft White, CRI80+ 120V, UL Listed FCC Certified - - Amazon.com Linkind Dimmable A19 LED Light Bulbs, 5.7W 460 Lumens 40 Watt Equivalent(6 Pack) & 9.5W 800 Lumens 60 Watt Equivalent(6 Pack), E26 Base, 2700K Soft White, CRI80+ 120V, UL Listed FCC Certified - - Amazon.com](https://m.media-amazon.com/images/I/41rKwZyMNIS._AC_SY350_.jpg)
Linkind Dimmable A19 LED Light Bulbs, 5.7W 460 Lumens 40 Watt Equivalent(6 Pack) & 9.5W 800 Lumens 60 Watt Equivalent(6 Pack), E26 Base, 2700K Soft White, CRI80+ 120V, UL Listed FCC Certified - - Amazon.com
![Luxrite BR20 LED Flood Light Bulb, 6.5W=45W, 3500K Natural White, 460 Lumens, Dimmable, UL Listed, E26 Base 4-Pack - Walmart.com Luxrite BR20 LED Flood Light Bulb, 6.5W=45W, 3500K Natural White, 460 Lumens, Dimmable, UL Listed, E26 Base 4-Pack - Walmart.com](https://i5.walmartimages.com/asr/507aaf14-db78-4dd9-ac9b-99de2c1705c4_1.d94859cf5ac5d99920b196ae847977de.jpeg)
Luxrite BR20 LED Flood Light Bulb, 6.5W=45W, 3500K Natural White, 460 Lumens, Dimmable, UL Listed, E26 Base 4-Pack - Walmart.com
![Green Creative 36201 6.5MR16DIM/830NF25/35W 6.5 Watt LED MR16 Lamp - 25º Beam - 3000K - 460 Lumens - 12V | PROLIGHTING Green Creative 36201 6.5MR16DIM/830NF25/35W 6.5 Watt LED MR16 Lamp - 25º Beam - 3000K - 460 Lumens - 12V | PROLIGHTING](https://www.prolighting.com/media/catalog/product/cache/14201fead59070678904726505de830a/m/r/mr16-25d_35w-side.jpg)
Green Creative 36201 6.5MR16DIM/830NF25/35W 6.5 Watt LED MR16 Lamp - 25º Beam - 3000K - 460 Lumens - 12V | PROLIGHTING
![GE Classic 45-Watt EQ LED R20 Daylight Dimmable Spotlight Light Bulb (3-Pack) in the Spot & Flood LED Light Bulbs department at Lowes.com GE Classic 45-Watt EQ LED R20 Daylight Dimmable Spotlight Light Bulb (3-Pack) in the Spot & Flood LED Light Bulbs department at Lowes.com](https://mobileimages.lowes.com/productimages/6dab921c-6ada-4ac7-b6a2-b03b72ae3e6a/09103141.jpg?size=pdhism)