Free beam calculation software for windows

The Filmcalculator is a program for people working in the film business. It is mainly useful for D.O.P.s, camera-operators, assistants, clapperloaders and gaffers but also for still photographers and video cameramen.
Primarily developed as a personal tool, the Filmcalculator has grown to a professional program with users world wide. Distribution as shareware makes it legal to make copies for colleagues and gives everybody the opportunity to try the program and decide if they like it before actually buying it.
Filmcalculator is a software that helps with calculations needed while planning or shooting a production.
Main features:
Optical calculations:
- Depth of field
- Splitfocus
- Focal length to lens angle
- Lens angle to focal length
Macro calculations:
- Magnification factor
- Needed diopter
- Needed Split diopter
- Scale/Model/SFX
- Event and screen time to frame rate
- Stop motion counter
- Screen time to frames
- Recommended camera spreed for miniatures
Distance/Size calculations
- Distance and object size to focal length
- Focal length and object size to distance
- Distance and focal length to object size
- Matching lens and distance
- Matching lens and format
Filmlength/time calculations
- Time to filmlength
- Shooting time to screen time
- Rollsize to filmlength
- Filmlength to time
- Filmstock counter
- Timecode calculator
Lamp and lighting calculations
- HMI flickerfree speeds and shutter angles
- Beam angle/distance/width conversion
- Illumination calculations
- User adjustable lamp tables
- Color correction
Exposure calculations
- Exposure corrections for speed and shutter angle
- Exposure changes replacing lights
Electricity calculations
- Watts/Volts/Amps/Ohms calculations
- Power cable calculations
- Generator calculations
- General
- Sun set/rise and positions
- Sun mapping / listing
- Moon positions / phases
- Info about filters/filmstock/apertures
- And more.......

Spindle Calculator is a free application that assists in the calculation of spindle (or baluster) count and placement for building your deck and railings.
Maximum spindle gap is taken into consideration during calculation of both outer and inner spindles. Dimensions may be entered in either real numbers or as fractional based numbers.
Though Spindle Calculator is by default installed to your Startup program group, you can place it any program group you desire.

Climate calculator is a software that was designed for air conditioning calculation Climate calculator is a software that was designed for air conditioning calculation.
Converting the values :
- Pt100
- temperature
- relative humidity
- dew point
- wet-bulb temperature t
- water vapour partial pressure
- saturation vapour pressure
- air density
- saturation humidity
- absolut humidity
- specific humidity
- enthalpy