Light Spectrometer Wavelength vs Planini

Measures light spectrum to determine the dominant wavelength in nm, frequency in THz and period length in fs. DOMINANT WAVELENGTH Dominant wavelength is a concept commonly used in the field of color science and perception. It refers to the wavelength of light that appears most prominent or dominant in a given color mixture or light source. In other words, it is the wavelength that our eyes perceive as the primary color in a mixture of different wavelengths. For light with only one wavelength, such as the light from a colored LED, the dominant wavelength corresponds to the wavelength of that light. KEY FEATURES • High accuracy • Real-time measurement • Measures light wavelength in nanometers (nm) • Measures light frequency in terahertz (Thz) • Measures light period length in femtoseconds (fs) • Easy to use • Save measurements with notes • Supports 40 languages, including english • Optional calibration for enhanced precision MEASURING 1. Find a white surface, such as a plain piece of white paper 2. Point your camera at the surface illuminated by your target light source 3. The app gives you accurate measurements in real-time LIMITATIONS Smartphone cameras have limitations when it comes to distinguishing between different very short, or very long wavelengths. More specifically, on many devices the accuracy below 465 nm and above 610 nm is very limited. This is due to the physical camera sensors in the devices. An automatic warning appears on the screen for these short and long wavelengths. WHITE LIGHT Note that is not meaningful to measure the dominant wavelength of white light as white light consists of a wide range of wavelengths, with no wavelength dominating. This app is made for measuring colored light. If you are interested in determining the color temperature of white light, please instead use our popular White Balance Kelvin Meter app. COLOR OF SURFACES If you want to measure the color of a surface or material, rather than of light, please instead use our popular Colorimeter Camera Color Meter app. Privacy Policy, https://spectrometer.contechity.com/pp.html End User License Agreement, https://spectrometer.contechity.com/eula.html CONTACT I value your feedback. Email me at apps@contechity.com with any suggestions or questions. Download the Spectrometer now!

Planini is the shopping list app for households, shared flats, families, and anyone who wants to plan together without clicking through overloaded task-management tools. Create households, share lists by invitation, and organize everything that needs to be bought or done. Items can be added with quantities, notes, and categories, then checked off, reopened, edited, or deleted. Categories help you move through the store faster: fruit, vegetables, bakery, cleaning, frozen food, or your own custom order. Even a full weekly shop stays clear and easy to manage. Planini is intentionally simple: • shared households and multiple lists • categories and custom list order • quantities and notes for each item • favorites list for quick access • invitation links for planning together • live updates when several people use the same list • passkey sign-in instead of passwords • Apple Watch app with quick access to your lists • Apple Watch complication for quickly adding a default item Planini is not only for shopping. Use the same clear list workflow for household tasks, packing lists, errands, weekend planning, or recurring things that do not belong in a complex project-management system. Why Planini? Because a good list has to be fast. Open it, add an item, check it off, done. Planini focuses on everyday use: fewer distractions, clear structure, quick interaction, and sign-in without a traditional password. Planini requires an account. Sign-in uses passkeys. For shared use, you can create households and invite other people.