Colorimeter is a type of photometer used to measure solution concentration. Learn how it works, its components, and applications. Colorimeter is a type of photometer used to measure the concentration of light-absorbing substances by measuring the...

A record-breaking blazar observation has shed new light on ancient black hole activity and the universe’s mysterious hidden radiation field. Astronomers have achieved a landmark breakthrough in high-energy astrophysics, detecting the most distant...

Astronomers discover four hidden white dwarfs close to the Sun, showing our stellar neighborhood still holds major surprises. A team of astronomers has identified four white dwarfs that were hidden within nearby binary systems, expanding the inventory...

For nearly a century, scientists have puzzled over the mysterious dark patterns in Venus’s clouds. What is the unknown substance absorbing ultraviolet light? For nearly a century, astronomers have been puzzled by mysterious, dark atmospheric features...

Tail Bands Provide Earliest Record of Croc Coloration The most striking revelation emerged from the tail region. Under UV light, alternating light and dark bands became apparent along the preserved scales, interpreted as the oldest known evidence of...

gas, potentially triggering a secondary wave of star formation. Newly formed massive stars then bathe the cavity walls in UV light, causing the gas to glow. Images showing the hydrogen-alpha and ionized sulfur. Credit: Kreckel et al., A&A, 2026 From...

Newly found object 660 million years post‑Big Bang could explain the rapid growth of the universe’s earliest supermassive black holes. A team of astronomers has reported what may represent the earliest example of a “black‑hole star,” a compact system...

Using next-generation telescope data, astronomers have uncovered a complex new mystery behind two distant cosmic sources that previously puzzled researchers. New data from the James Webb Space Telescope (JWST) has forced a significant reclassification...

Hubble’s view of a tiny galaxy provides the clearest evidence yet of how the early Universe cleared its primordial cosmic fog. A dwarf galaxy barely a hundredth the mass of the Milky Way has provided astronomers with one of the clearest looks yet at a...

due to their unique spectral profile. Low-energy X-rays are notoriously difficult for sensors to register, and the intense UV light they produce is frequently absorbed by the hydrogen and helium gas clouds that permeate galactic space. “That’s how we...

Scientists may have finally identified the mysterious, dark substance hidden within Venus’s clouds that has baffled researchers for over a century. For over a century, astronomers have tracked dark, swirling streaks and patches that drift through...

Astronomers spot UV radiation from galaxy MXDFz4.4, just 1.4 billion years after the Big Bang, reshaping ideas about the early universe. Astronomers have captured the first clear signature of ionizing radiation leaking from a galaxy that lived at the...

foam Bilirubin Orange or orange-brown Urobilinogen/Porphobilinogen Milky-white Chyluria Red or orange fluorescence with UV light Porphyria Note: Many drugs cause changes in urine color; drug history should be obtained if there is abnormal coloration of...

technologies convert purified water into ultrapure water suitable for highly sensitive testing. Ultraviolet (UV) Oxidation UV light at 185 nm oxidizes organic molecules, reducing TOC levels. At 254 nm, UV also inactivates microorganisms. This step is...

A new survey has identified 529 quiet, mature K dwarf “Goldilocks stars” near the Sun, offering the most stable radiation environments known and creating an unprecedented list of prime targets in the search for habitable exoplanets. For generations,...

Ancient microscopic plant fragments, dating back hundreds of millions of years, prompt scientists to reconsider the timeline of a key survival adaptation. Deep within a coal seam of the Hujiersite Formation in Xinjiang, China, researchers have...

Malaysia’s glowing‑lane road safety test without electricity faced unexpected hurdles, prompting officials to rethink the plan. Malaysia’s government is set to abandon plans for luminous road markings after pilot projects proved both expensive and...

Vitamin A is also known as an 'anti-infection' vitamin. Vitamin D (Calciferol) Synthesized in the skin from cholesterol by UV light. Also known as sunshine vitamin or antirachitic vitamin. Good sources: meat, liver and milk. Cod liver and shark liver...

Learn what basal cell carcinoma (basal cell skin cancer) is, how it relates to keratinocyte carcinoma, and steps for diagnosis and treatment in clear terms. Basal cell carcinoma (BCC) is the most common form of skin cancer, developing from basal...