IN the past, several sets of measurements have been made of the variation of Brinell hardness number with grain size, notably on α-brass1, copper and bronze2, and ‘Armco’ iron3. The consistent ...

White noise includes all frequencies and can help with relaxation and masking sounds. Pink noise is softer with more power in lower frequencies and can be more pleasing and relaxing. Brown noise is ...

Have you ever looked at an Advent wreath and wondered why there are three different candle colors used on it? The three Advent candle colors, purple, pink, and white, have deep spiritual symbolism and ...

When the monsoon rains start coming, Verde Valley rockhounds come running. And from first rainfall, there is no time for games for rockhounds, or amateur geologists, when it comes to hunting for ...