Ramadan and Astronomy
“What does the holiest month in Islam have to do with astronomy?”
Every year, Muslims all around the world will fast and refrain from sin for one month to fulfill one of the five pillars of Islam. But did you know that there is a connection to Astronomy? Well, every year Ramadan begins on the sighting of a crescent moon, since the Islamic calendar is a lunar calendar. This is the relationship between Ramadan and Astronomy.
Image credit https://gulfbusiness.com
Why Liquid Hydrogen in Vehicles Can Be Very Dangerous
“What are the dangers of liquid hydrogen fuel in vehicles?”
Hydrogen fuel cell vehicles are a very hot research topic. However, liquid hydrogen vehicles present some strong dangers. Although sealed hydrogen is relatively safe, exposed hydrogen has some factors which can make it less so. First of all, hydrogen can catch fire really easily as it only requires 1/10th of the energy to combust compared to gas. Hydrogen flames are also nearly invisible and can displace oxygen in human lungs, making it a very silent killer. This is Why Liquid Hydrogen in Vehicles Can Be Very Dangerous.
“How can we remove and store carbon dioxide from the atmosphere?”
Climate change is one of the most if not THE most dangerous event happening right now. And much of this is driven by the increased levels of carbon dioxide in the atmosphere. While most efforts are currently concentrated on limiting further emissions, there are currently efforts underway to actually remove carbon from the atmosphere. Known as Carbon Sequestration, this can be accomplished through a variety of methods such as increasing plant biomass or having large-scale fans suck up great amounts of CO2. If things become very drastic, then we may have to significantly increase the scale of carbon sequestration.
Why Tempered Glass is Used for Cooking Lids
“What type of glass is used for cooking lids?”
Cooking food is one of the most intricate parts of human life, whether it be meal-prepping for the week or dining with friends. And if one is using a pot then one of the most useful things is to see what is going on underneath. That way, we can monitor what processes are occurring and what to do if something goes wrong. Usually, translucent covers are made of glass. However, since cooking involves high changes in temperature and pressure, the glass needs to be extremely strong and sturdy. As a result, tempered glass with its thermal strength is used. This is why Tempered Glass is Used for Cooking Lids.
High-level Nuclear Waste
“What is the highest level of nuclear waste?”
During nuclear power generation, the energy in the fuel rods will become used up. Although it will no longer be effective in creating electricity, it will still be extremely radioactive. The most dangerous form of this is known as High-level Nuclear Waste. High-level nuclear waste must be carefully isolated in strong containers such as water entrapment systems to prevent any form of leakage.
Image credit https://encrypted-tbn0.gstatic.com
Quantum Dots for Solar Panels
“Why are quantum dots for solar panels so useful?”
Quantum dots are bringing a revolution into the world of semiconductors. And since semiconductors are the backbones of solar panels, things will be greatly changed for them as well. The extra emissivity offered by quantum dots means that two and possibly three electrons can be generated for every photon received, vastly increasing its potential! Quantum dot solar panels can achieve as much as 65% efficiency, nearly double of the theoretical limit of normal panels. This is why Quantum Dots for Solar Panels are so exciting.
Image link https://upload.wikimedia.org
“What is the next big revolution in semiconductors?”
Semiconductors technology is going through a revolution. Nanosize semiconductor materials known as Quantum Dots which can give off light when illuminated are starting to be developed. Their small size allows them to be much more efficient than typical semiconductors and can give off a broader range of lights.
Image credit i.ytimg.com