Shop Orchid Care OrchidTalk Orchid Forum Weather Station Links Nursery

Welcome to OrchidTalk Orchid Forums

The Friendliest Orchid Community on the Internet!

  •  » Learn to Repot your Orchids
  •  » Learn Orchid Care Tips and Secrets
  •  » Find the perfect Orchid for your Growing Environment
  •  » Chat with Orchid Growing Professionals

OrchidTalk - "Bringing People Together to Grow Orchids Better!"

Let us help you grow your Orchids better; Join our community today.

YES! I want to register an account for free right now!

Register or Login now to remove this advertisement.

Page 2 of 2 FirstFirst 12
Results 11 to 12 of 12
Like Tree12Likes

Rising and falling footcandles

This is a discussion on Rising and falling footcandles within the General Orchid Culture forums, part of the Orchid Culture category; Lijun - don't forget that light intensity falls off with the inverse square of the ...

Click here to increase the font size Click here to reduce the font size
  1. #11
    raybark's Avatar
    raybark is offline Senior Member
    Real Name
    Ray Barkalow
    My Grow Area
    Join Date
    Oct 2012
    Buckingham PA


    Lijun - don't forget that light intensity falls off with the inverse square of the distance, so that as bright as your streetlights are, by the time the light reaches the plants, it's a tiny fraction of that intensity. Another part of the problem is that the human eye adjusts very well, so light that is in all probability not detected by a plant is still quite visible to us.

  2. #12
    lijun's Avatar
    lijun is offline curious
    Real Name
    My Grow Area
    Favorite Orchid(s)
    exploring and getting greedy
    Join Date
    May 2014
    north sumatra, indonesia
    Member's Country Flag


    ow,.. i c,.. so there is nothing to worry,... thank you ray for explaining,...

Page 2 of 2 FirstFirst 12

Similar Threads

  1. Dendrobium buds falling off
    By ransikaal in forum General Orchid Culture
    Replies: 3
    Last Post: February 4th, 2012, 07:34 PM
  2. FootCandles/Lights
    By Raver in forum Semi Hydro / Lights / Greenhouses / Accessories
    Replies: 8
    Last Post: May 26th, 2010, 01:15 PM
  3. Phrag. Jason Fischer 'Phoenix Rising' FCC/AOS
    By lienluu in forum Paphiopedilum, Phragmipedium, Cypripedium IN BLOOM
    Replies: 8
    Last Post: February 26th, 2008, 04:05 PM
  4. Footcandles....
    By mtequine in forum Semi Hydro / Lights / Greenhouses / Accessories
    Replies: 6
    Last Post: February 11th, 2007, 11:09 AM
  5. Buds falling off
    By MiddleAgesMan in forum Orchid Ailments / The Compost Pile
    Replies: 6
    Last Post: August 12th, 2005, 12:47 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
OrchidTalk --An Orchid Growers Discussion Forum brought to you by River Valley Orchidworks. A World Community where orchid beginners and experts talk about orchids and share tips on their care, cultivation, and propagation.