Insulator

contemporary wood garage doors offer much more than just stylish looks. Our high-quality materials and fine craftsmanship ensure that your garage doors will last for many years, even in harsh conditions. Wood garage doors also act as an excellent insulator and sound barrier, keeping nasty weather and loud noises outside where they…

Have you ever wondered about the people from the past? Have you ever asked yourself what did people eat in the Middle Ages? What did they do all day, without technology?” In the Middle Ages, the lowly peasants of the world were called “serfs.” They did all the work. Serfs farmed, and served their lord, with little thanks in return. Serfs ate much the same food that we do today. The work that they do is oftentimes done by machines today. They lived in one room houses that were sometimes no warmer…

costed less energy compared to a typical building techniques. Different materials that used saved the house a lot of energy compared to a typical house. For example of using aluminum windows, they choose to use wood. Instead of using spray foam as insulator, they used sprayed-in cellulose, which is a much less energy consumption rate. All these proves that every choice that we make…

Thermoelectric characteristics of bulk and ultrathin Ge-on-insulator substrates fabricated by direct wafer-bonding 5.1 INTRODUCTION Thermoelectric materials have been attracted considerable attention due to their ability to capture waste heat and to convert to useful electrical energy. However, their conversion efficiency is not sufficient for a practical use. The theoretical power-generator efficiency increases monotonously with increasing the figure-of-merit Z of thermoelectric materials which…

The first layer of fur are made up of short and dense hair which prevent the water from getting through the skin, this fine hair layer are able to trap air as well as acting as an insulator that maintain the body temperature of platypus since it is nocturnal and spend most of it time hunting in water. The fur in second layer are longer compared to the first layer, it is waterproof and touch sensitive which aiding the platypus in navigation…

My Timeline focuses on inventions spanning from 1900 to 1910, this decade saw a lot of new concepts that no one ever touched before. It also covers everyday things we use, such as the thumbtack or windshield wipers, and even things we take for granted such as the electric washing machine. We have definitely come a long way since 1910, it was over 100 years ago. Things have changed dramatically since then, we’ve landed on the moon, we have iPhones, and the internet is everywhere. But some things…

1. What is the forbidden gap in semiconductors? One electron volt (eV) 2. At absolute zero temperature, semiconductor behaves as Insulator 3. Define electrical conductivity. Electrical conductivity is the ability to conduct an electric current. 4. What are the two types of charge carriers in semiconductors? Electrons and holes are the two types of charge carriers in semiconductor. 5. Define charge carrier. Charge carrier is a particle, which carries electric charge or electric current from one…

steady state. It cannot be easily measured, especially for materials with low conductivity. As with electrical conductivity, sometimes we need materials that are good conductors and with this we may also need good insulators. Good conductors are needed for heat exchangers and good insulators are needed for the insulation of…

Most people know that heat moves from hot objects to cold objects, but do they know how that heat is transferred? There are only three ways that heat can be transferred: conduction, convection, and radiation. Today I will endeavor to inform the reader on how these three different methods of heat transfer work and provide examples of where they occur in the real world. The most prevalent, and most commonly recognized, form of heat transfer is conduction. Conduction is the transfer of heat…

Senior Care – Staying Safe in Winter Whether or not you believe in global warming, one thing is certain: half of the country suffers dramatic cold for many months each winter. Over the last few years, winter storms have been quite severe. Those who choose to live in climates where winter means cold, snow, ice, and darkness, understand the incredible beauty and magic that each winter brings. They are also aware of the many challenges that the season brings. For seniors, many of these challenges…