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The life expectancy of many types of lamps is defined as the number of working hours in which 50% of the lamps fail, i.e. the average life of the lamp. A production tolerance of as little as 1% results in a 25% difference in bulb life, so in general, some bulbs fail before the rated life expectancy, while others have a longer life. For LEDs, lamp life is defined as 50% of the light output of the lamp is reduced by 70% of the working time.
Some types of lamps are also sensitive to switching cycles. In rooms with frequent switches, such as bathrooms, the life expectancy of the light bulb is much shorter than that printed on the packaging box. Compact fluorescent lamps are particularly sensitive to switching cycles.
- Alarm clock
- Audio cassette
- Balloon
- Bandage
- Bell
- Book
- Bottle
- Brick
- Brushes
- Bucket
- Bulb
- Cage
- Candles
- Cards
- Cigarette
- Clock
- Coins
- Column
- Comb
- Cones
- Credit card
- Crutch
- Dice
- Dominoes
- Drum
- Electric guitar
- Electronic cigarette
- Eraser
- Falling money
- First aid kit
- Flute
- Gavel
- Glasses
- Golden cup
- Guitar
- Hairbrush
- Harp
- Heart
- Jail
- Key
- Keychain
- Kite
- Lamp
- Leash
- Lifebuoy
- Lighter
- Matches
- Matryoshka doll
- Medal
- Money
- Mop
- Mouse trap
- Pacifier
- Paper plane
- Pen
- Pencil
- Pencil sharpener
- Phone
- Piggy bank
- Plastic bag
- Postage stamp
- Recycle bin
- Ribbon
- Rubik's Cube
- Shield
- Shopping bag
- Shopping cart
- Skyscraper
- Sponge bath
- Stapler
- Star
- Stethoscope
- Sticky notes
- Street light
- Sunglasses
- Telephone booth
- Thermometer
- Toilet brush
- Toothbrush
- Torch
- Trash can
- Trombone
- Trumpet and Saxophone
- TV
- Umbrella
- Vinyl record
- Violin
- Whip
- Aluminum
- Amulet
- Antique
- Artificial Turf
- Axe
- Bathroom Interior
- Billboard
- Blade
- Bubble Wrap
- Button
- Can Opener
- Cylinder
- Dog House
- Ear Plug
- Engineer Helmet
- Fidget Spinner
- Filter
- Gate
- Gem
- Helmet
- Hob
- Icebox
- Ice Tool
- Interior Design
- Keyholder
- Keys
- Kitchen Tools
- Knife
- Ladle
- Measuring Tool
- Mobile Cover
- Mug
- Ornament
- Package
- Plate
- Princess Crown
- Rack
- Rubik's Cube
- Scented Candles
- Scissor
- Security Safe
- Spanner
- Spikes
- Square Academic Cap
- Stairs
- Tape
- Tape Measure
- Thorns
- Time
- Tools
- Tree Stand
- Vault
- Vittel
- Wand
- Weapon