Learn how concave mirrors form images with a clear, step-by-step explanation that makes the mirror equation easy to understand. This lesson covers ray diagrams, focal length, image position, and ...

While turkey may be the most popular meat of choice when it comes to serving Christmas dinner, for those who are keen on gammon, a home cook has advice that will ensure your roast is "delicious" on ...

In many households, a slow cooker is the secret weapon for preparing hearty winter dishes with minimum effort - and Lakeland is currently selling this 3.5L slow cooker for £39.99, down from £44.99. A ...

We independently review everything we recommend. We may get paid to link out to retailer sites, and when you buy through our links, we may earn a commission. Learn more› By Dorie Chevlen While she was ...

Critics argue the satellites, billed as a way to harness solar energy at night, could hamper sky observations and may pose a threat to human and animal health A long-exposure view of the Milky Way, ...

After reading a Nov. 5 letter expressing concerns about the Prince Gallitzin solar array, I reviewed the Altoona Mirror articles from both Oct. 21, 2025, and Aug. 30, 2024, regarding the installation.

The Oct. 21 Mirror article on the solar array installed at Prince Gallitzin raises way more questions than it answers. The article states that electric costs have dropped $90,000 while the array ...

Choosing a makeup mirror is a bit like choosing a perfume: each mirror compact carries its own personality, meant to complement the person who will tote it around. For the timeless types in your life ...

California startup Reflect Orbital plans to launch thousands of satellites with mirrors to redirect sunlight to solar farms at night. Astronomers warn the bright reflected light could be “ruinous” to ...

Kate Adamala had been working on something dangerous. At her synthetic biology lab, Adamala had been taking preliminary steps toward creating a living cell from scratch with one key twist: All the ...