Worklight Work Light
How does 12000 mcd led work light compare to a 500 watt halogen worklight?
That depends on the LED and the halogen lamp. The units mcd (millicandela) and W (Watt) do not denote the same type of measurement.
Watt is the unit of measurement for radiant flux, which is the energy radiated by the light source per unit of time. This light may be radiated in ANY direction.
Candela (or millicandela = 1/1000th candela) is the unit of measurement for luminous intensity, which is the amount of energy (of the total energy available as radiant flux) radiated by the source for a unit solid angle, in a certain direction. Synonymous to luminous intensity is radiant intensity, the unit of which is Watt/sr (Watt per steradian which we can clearly see is not the same as Watt).
1 Watt/sr = 683cd = 683000 mcd.
This means that you can have two light sources with the same available radiant flux (say 500 Watt), but one may radiate light in a narrow beam of only 1steradian while the other source radiates in a wide solid angle of 3sr. The first source will then have a radiant intensity of 500 W/sr (or 3415 cd), while the second source has a radiant intensity of only 500/3 = 166.6 W/sr (or 822.23 cd).
Lets assume that your halogen lamp radiates light in a full sphere (which is 4pi sr) and your LED radiates in only half a sphere (2pi sr). The radiant intensity of your halogen lamp is then 500/4pi, or 39.7887 W/sr, making its luminous intensity 27176 cd. That is more than two thousand times higher luminous intensity than the 12000mcd (= 12cd) LED.
Video Tips & Tricks ep13: How to Build Barndoors on Worklight for Green Screen Youtube Videos
| | Dewalt DW906 14.4 Volt Flashlight Cordless Worklight $17.40 |
| | Work Light 78 LED Rechargeable Trouble Light Home Shop Auto Car Shop Tools New $29.95 |
| | Vintage Imar Flex Goose Neck Desk Lamp Spotlight Work Light Mid Century Modern $10.50 |
| | 60 + 9 Led Rechargeable Work Light Camping Work Light AC Charger Included Auto $34.99 |
| | REGENT 500 WATT WORK LIGHT IN BOX $15.98 |
| | *NEW*GRIP-LIGHT-2-in-1 FLEXIBLE BENDABLE WORKLIGHT-TWISTS WRAPS BENDS *NEW* $17.99 |
| | Cliplight 123307 – Shop Tough Hemitech 3 LED Worklight $77.95 |
| | Stanley SquidBrite work light- Flexible rubber groove s $42.19 |
| | Maxsa super bright LED work light- Perfect for home imp $38.99 |
| | SUPER BRIGHT 27 WHITE LED HANGING OR MAGNETIC WORK LIGHT FLASHLIGHT W BATTERIES $9.99 |
| | 2 Work Lights Flashlights — Aluminum LED Mini– by Commercial Electric $22.98 |
| | 2 Work Lights Flashlights — Aluminum LED Mini– by Commercial Electric $22.98 |
| | 12V 24V 15W LED Work Light Lamp Flood Beam High Power Offroad Truck ATV Boat 4WD $21.99 |
| | Cordless Work Light 66 LED Auto Home Flashlight Camping Emergency Lights $29.95 |
| | Auto Car Repairing DC 12V Cigarette Lighter Plug Magnetic Work Light Lamp $17.24 |
| | New 27 leds LED Work Light Hook Flashlight with Magnet and 2 Light Modes $5.49 |
| | Blue cover portable 24 leds LED Work Light Hook Flashlight with Magnet & hook $4.49 |
| | Black cover portable 24 leds LED Work Light Hook Flashlight with Magnet & hook $4.49 |
| | NEW Volt Sensing Swivel Work Light Ea. Circuit/voltage Testers FLT-20 $31.12 |
| | 24w led work light Offroad Truck Car Jeep light ATV Boat IP65 square flood light $16.99 |
| | NEW TerraLUX WorkStar 46 LED Worklight Flashlight AC DC $39.69 |
| | New arrival! 5900 LM 108W 30 inches led work light bar off-road mining lamps $353.00 |
| | Netgear wireless router wpn824v2 DOES NOT WORK-lights up, but no signal anymore $2.99 |
| | Woods Ind. L-1992 36LED WORKLIGHT $28.47 |
| | NAT-75033 National Electric Lumetronic 27 +6 LED Work Light $52.95 |
| | Protable Superbright 27 LED Work Light Hook Flashlight Spot Light Blue $0.99 |
| | Protable Superbright 27 LED Work Light Hook Magnet Lamp Spot Light Pink $0.99 |
| | Protable 27 LED Work Light Magnet Hook Flashlight Spot Light For Camping $0.98 |
| | Alert KTL2815 LED WORKLIGHT $25.93 |
| | MILWAUKEE 49-24-0185 V28 28 Volt 28V Pivoting Head Cordless Work Light NEW $9.99 |
| | 27 LED FLASHLIGHT WORK LIGHT HOOK MAGNET PORTABLE for Car, Camping, Picnic $6.00 |
| | MILWAUKEE Clip-Lok 18v 49-24-0165 WORK LIGHT NEW $26.99 |
| | 2 pcs 27W LED Work Light Flood lamp 12-24V Offroad 4WD Car Truck Boat Waterproof $77.77 |
| | 72W Slim LED Work Light Bar Double Vision Headlight for OffRoad Drive JEEP TRUCK $214.69 |
| | Dozen 27 LED Blue Flashlights Portable Worklight with Magnet & Hook New in Box $69.99 |
| | Craftsman 19.2 Volt WorkLight Model 11391 / 315.113913 $15.95 |
| | EZRED Pocket LED PCLED6 Mini Work Light NEW $16.25 |
| | Magnetic work light truck boat 12v camper rv SUV 4×4 JD $7.99 |
| | ATD Tools 60 Led Saber LI-ION Cordless Worklight 80136 $56.99 |
| | NEW Porter Cable Cordless 18V Flashlight PC1800L Work Light $22.50 |
| | 4C30 QUARTZ BULB, 500W, TUBE TYPE (WORK LIGHT), TESTS O $3.00 |
| | Car Camping Hanging 27 LED Inspection Worklight Torch Lamp Light $1.00 |
| | MILWAUKEE 49-24-0165 V18 18 Volt Pivoting Head Cordless Flashlight Work Light $9.99 |
| | TACO LED Work Light w/Charger & Adapter $39.99 |
| | Designers Edge L-5200 500-Watt Double Bulb Halogen Portable Worklight $25.08 |
| | 13″ 72W LED Flood Work Light Bar OffRoad 10V-30V Driving Boat Truck SUV Marine $149.99 |
| | NEW BRIGHT 27 LED WORK LIGHT FLASH LIGHT Efficient and Highly Adaptable Light $6.95 |
| | LED Work Light Bar 120W High Power Flood Headlight Rail Vision 10-30V DC 6000K $312.54 |
| | 180W LED Work Light Bar Offroad Truck Forklift Jeep Boat ATV SUV 12V 24V Flood $483.99 |
| | Milwaukee M12 Cordless Xenon Work Light 49-24-0145 $32.99 |
| | Craftsman Worklight Incandescent C3 18.0 V Accepts Rechargeable Ni-Cd $0.99 |
| | Auto Car Repairing DC 12V Cigarette Lighter Plug Magnetic Work Light Lamp $11.79 |
| | 24w led work light Jeep ATV Offroad Truck Car lamp round IP65 white spot 12V 24V $15.99 |
| | Rechargeable Cordless 19 LED Tube WORK LIGHT new shop $24.99 |
| | BRINKMAN 809-5010-0 – N TUFF MAX LED SWIVEL WORK LIGHT $26.59 |
| | BRINKMAN 827-1000-0 – N TUFF MAX LED AREA WORK LIGHT $34.69 |
| | Retractable Cord Magnetic Yellow Work Light Lamp DC 12V for Car Vehicle $9.73 |
| | AUTO WORK LIGHT–SEARS UTILITY LIGHT–VINTAGE $19.90 |
| | Sealey 3 LED Work Light Clip-on Ht991 $9.50 |
| | Sealey 3 LED Work Light Clip-on Ht991 $9.50 |
| | Bayco SL825 13-Watt Fluorescent Work Light with 40-Foot Cord Reel $12.50 |
| | J. W. Speaker Oval Halogen Work Lights $30.00 |
| | 20V MAX Lithium Ion LED Work Light $85.99 |
| | 2 x 10W 12V/24V Square High Power 900lm LED Work Light for 4WD Off Road Vehicles $109.00 |
| | 4 x 24W 12V/24V Square High Power Flood LED Work Light for 4WD Off Road Vehicles $159.00 |
| | 4 x 24W 12V/24V Round High Power Flood LED Work Light for 4WD Off Road Vehicle $159.00 |
| | NEW 55W HALOGEN WORK LIGHT, REVERSE, CAMPING FLOOD LAMP $24.75 |
| | PAIR of NEW 55W HALOGEN WORK LIGHTS REVERSE FLOOD LAMPS $49.49 |
| | WORK LIGHT TRACTOR LIGHT SNOWPLOW LIGHT SNOWBLOWER LIGHT FORKLIFT LIGHT $6.99 |
| | 28 LED Magnetic Work Light Hanging Hook Flashlight Great for Outdoors $28.99 |
| | Tekton MIT 36 LED 2 in 1 Worklight Flashlight Combination Flash Light – Warranty $22.49 |
| | New LIGHT SET OF 4 – 10 LED WORK LIGHTS, TOW TRUCK, ROLLBACK, TOWING WORK USE! $395.00 |
| | Metal Cage E27 Bulb Base Hand Lamp Work Light AC 250V $28.13 |
| | HIGH QUALITY WHITE LED REVERSE, WORK LIGHT, LAMP 12v $21.77 |
| | MATCO CORDLESS WORKLIGHT WITH LITHIUM BATTERY $38.00 |
| | Car Repairing Cigarette Lighter Plug Magnetic Yellow Work Light Lamp $10.38 |
| | 2x 18w LED Work Light 12-24 v SEMI side back up reverse parking trailer porch RV $78.50 |
| | 21+5 LED WORKLIGHT TOP LIGHT/hand lamp/torch AND CHARGER.MAGNETIC, 5 POSITIONS $39.48 |
| | 18w LED Work Light lamp 12V24V Vehicles ATV BOAT jeep $38.99 |
| | 15w LED Work Light lamp 12V24V Vehicles ATV BOAT jeep $38.99 |
| | 2*15w LED Work Light lamp 12V24V Vehicles ATV BOAT jeep $76.00 |
| | 10-30V M/VOLT 12W LED WORK LIGHT WITH SWITCH ON REAR BRITE LED TECH 1 X BL-108P $36.32 |
| | 13 Watt X-Light Yellow Work Light with 50 ft. DC Cord $85.99 |
| | Sports short sleeve T-shirt GOLFING Born to GOLF forced to work $17.95 |
| | Sports short sleeve T-shirt GOLFING Born to GOLF forced to work $18.95 |
| | Sports short sleeve T-shirt GOLFING Born to GOLF forced to work $17.95 |
| | Sports short sleeve T-shirt GOLFING Born to GOLF forced to work $17.95 |
| | Sports short sleeve T-shirt GOLFING Born to GOLF forced to work $18.95 |
| | Sports short sleeve T-shirt GOLFING Born to GOLF forced to work $17.95 |
| | Sports short sleeve T-shirt GOLFING Born to GOLF forced to work $18.95 |