0.1%], ferric chloride [0.1%], and tin [0.3%]). A particular strength of our study was that late readings (up to 2 weeks after the application of metal allergens) were required throughout the ...

For a lot of reasons, home etching of PCBs is somewhat of a dying art. The main reason is the rise of quick-turn PCB fabrication services, of course; when you can send your Gerbers off and receive ...

In the mid-20th century, community spaces like swimming pools and sporting events became a source of anxiety for parents who were frightened by the rampant spread of poliovirus. Their concerns ...

King III explores his complicated relationship with his father's legend in 'What Is My Legacy?: Realizing a New Dream of Connection, Love and Fulfillment' In 2022, Martin Luther King III, the son ...

Wonder Land: Donald Trump used to be accused of breaking norms. Now it’s ‘disruption.’ Question is: will this approach work in 2025? The answer doesn’t break easily into yes or no. Photo ...

Exactly why the sculpture was attacked by University of Georgia students may always be a mystery. But 70 years later, restored, it rides again. It was recognizably a horse, but it was no classical ...

In 2022, Martin Luther King III, the son of the legendary slain civil rights activist Martin Luther King Jr., talked to PEOPLE about what it was like spending the first 10 years of his life living ...

Flat irons seem pretty straightforward since they require just a few passes with a steady hand to do their job, but certain things can set a good one above the rest: a range of heat settings to ...

While the reigns of George I and II had been marked by a royal detachment from the administration of American colonies, King George III asserted his claim on the colonies strenuously. The king saw ...

The solution turns brown. This brown colour is the displaced bromine. The chlorine has gone to form sodium chloride.