Hwang Il SeokJan 123 minReport :: Photodiscoloration of Wood by UVTo see changing color when wood is exposed to UV light. Experiment up to 600 hours in 100-hour increments to find the most suitable time.
Hwang Il SeokSep 13, 20221 minSoftware :: [Update] Catenary Curve Generator, v.3.2.1 Some bugs have been fixed.
Hwang Il SeokAug 31, 20222 minSoftware :: [Update] Violin Designer, v.2.5.1 Some functions related to corners have been added/changed.
Hwang Il SeokAug 14, 20223 minSoftware :: Stiffness Calculator, v.2.0.0 This program calculates the stiffness and sound velocity of the material using the three resonant frequencies of the violin material.
Hwang Il SeokJun 11, 202211 minNote :: Measuring the Sound Speed in Wood : Without a Lucchi MeterThis is a description of how to measure the speed of sound of a material using only earphones and a computer without a Lucchi meter.