Marcel Délèze website

• Simplify calculation of a deductible rate
• Demonstration by the absurd of "The square root of 2 is an irrational number"

• Average atmospheric temperature in °C, as a function of altitude
• Average atmospheric pressure in hPa, as a function of altitude
• Boiling temperature of water in °C depending on altitude

Music

Equal tempered scale: frequencies

• Table of the hertz frequencies of the notes of the equal tempered scale

For drawing or painting

• Placing a grid on an image with squares and receive an image
• Placing a grid on an image and receive a PDF of one or more pages
• Divide an image into equal rectangles and receive an image

• To cut an image into equal rectangles, thus enlarging the image :
  • Convert an image to a multipage A4, A3 or US letter PDF
• Convert an image into a multipage PDF to obtain a given width or height :
  • on US letter sheets
  • on A4 sheets
  • on A3 sheets

• Number of stitches and rows by comparing my sample to that of the model