From Singularity Tech: Play with blue light and feel better!Blue Light Therapy App is intended to stimulate your brain with blue light.SupraChiasmatic Nucleus (SCN), a region of your brain receives information about the light that you see through your eyes and makes sleep/wake transition decisions. do not know if the app will work for you-when I play with it, I FEEL VERY GOOD!HOW TO USE:1)Hold the phone in your hand and touch the screen to create ripples of blue.-OR-2)Start the app and set it to create ripples automatically.
1 For a 1,000 square foot home, the cost of an HVAC system is $6,000 to $12,000, including a new furnace, air conditioning unit, and ductwork.2  For larger homes and more complex setups, however, the price could be significantly higher. A new furnace in a central heating system costs $2,500 to $7,500 or more. 2  If you donât need ductwork, the cost of a new heating and cooling system can be significantly decreased.
Quick Answer. As of 2014, a building owner can expect to pay between $5,000 and $11,000 to replace the residential HVAC system. The cost of replacing an HVAC system varies greatly. The type of system, installation costs and any necessary changes or modifications to the structure can dramatically affect the cost of replacing the HVAC system. Keep Learning.