VibraUnits vs Lumen

VibraUnits converts amplitudes of the most commonly used units in mechanical vibration analysis. The vibration equations used for changing units between displacement-velocity-acceleration only apply to vibration occurring at a discrete frequency (sinusoidal waves). Features: - Conversion between velocity, acceleration and displacement - Frequency conversion between Hz and CPM - Displacement conversion between mils and microns (RMS, 0-peak & peak-peak) - Velocity conversion between inch/s and mm/s (RMS, 0-peak & peak-peak) - Acceleration conversion between G's and m/s^2 (RMS, 0-peak & peak-peak) Disclaimer: This app is intended for educational purposes, although the calculations were made with great care, it may contain errors or inaccuracies. Using the results of the calculations is the responsibility of the user.

Lumen is a beginner-focused telescope guide designed for real observation sessions. It helps you set up your telescope correctly, choose what to observe, and use the right magnification — without overwhelming you. - Set up your telescope properly Follow a guided setup wizard to reduce common beginner mistakes like poor leveling or incorrect mount configuration. - Choose what to observe Start with beginner-friendly objects like the Moon, Jupiter, and Saturn. - Use the right eyepiece Based on your telescope and accessories, Lumen calculates all possible magnification combinations and recommends the most suitable one. - Understand what you’re seeing Get short, clear explanations connected directly to your current observation. - Preserve your night vision Optional red light mode designed for outdoor night use. If you bought a telescope and want to actually see something meaningful, Lumen helps you get there.