Pennsylvania State University engineers have developed a new way to simulate sonic-boom penetration into the ocean, then estimate how loud a noise the boom makes underwater, where it could annoy whales, fish, and other marine life. Called the finite difference method, the technique can compute the penetrating sonic boom noise for simple or complex ocean surfaces, corresponding to calm and rough seas. Using the technique, the researchers found that a somewhat complex wavy ocean surface only slightly augments the underwater noise from a sonic boom.
At this year's MD&M West show, lots of material suppliers are talking about new formulations for wearables and things that stick to the skin, whether it's adhesives, wound dressings, skin patches and other drug delivery devices, or medical electronics.
The US Congress has extended an important tax credit for solar energy, a move that’s good news for future investments in this type of alternative energy and for many stakeholders in the solar industry.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.