.
📚GK/CA/GA | Sunday, 15 July 2018
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
✅How does detergent and soap works ?
Soaps and detergents are made from long molecules that contain a head and tail. These molecules are called surfactants. Water alone can't clean clothes because it won't attach to molecules of grease and dirt. Detergent is different. The surfactants it contains are made of molecules that have two different ends. One end is strongly attracted to water; the other is attracted to oily substances like grease.
✅Who created the first world map ?
The earliest Greek known to have made a map of the world was Anaximander. In 6th century BC, he drew a map of the then known world, assuming that the earth was cylindrical. The first Greek to draw a world map using the assumption of a spherical earth was Eratosthenes.
✅Why food cook faster in pressure cooker ?
The trapped steam increases the atmospheric pressure inside the cooker by 15 pounds per square inch (psi), or 15 pounds above normal sea-level pressure. At that pressure, the boiling point of water is increased from 212°F to 250°F. This higher temperature is what cooks food faster.
✅Why does milk help with spicy food ?
Spicy foods contain a substance from chillies called capsaicin. Capsaicin stings taste buds, and milk binds with the hot capsaicin oils to disperse them. Cold water is not effective to mitigate spiciness because water-based liquids spread capsaicin and likely increase the burning sensation.
✅How does digital camera works ?
A digital camera takes light and focuses it via the lens onto a sensor made out of silicon. It is made up of a grid of tiny photosites that are sensitive to light. Each photosite is usually called a pixel, a contraction of "picture element". There are millions of these individual pixels in the sensor of a DSLR camera.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Join us
🆔 https://t.me/EducationFirst
📚EDUCATION📚
♻️ Education Brings Prosperity♻️
📚GK/CA/GA | Sunday, 15 July 2018
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
✅How does detergent and soap works ?
Soaps and detergents are made from long molecules that contain a head and tail. These molecules are called surfactants. Water alone can't clean clothes because it won't attach to molecules of grease and dirt. Detergent is different. The surfactants it contains are made of molecules that have two different ends. One end is strongly attracted to water; the other is attracted to oily substances like grease.
✅Who created the first world map ?
The earliest Greek known to have made a map of the world was Anaximander. In 6th century BC, he drew a map of the then known world, assuming that the earth was cylindrical. The first Greek to draw a world map using the assumption of a spherical earth was Eratosthenes.
✅Why food cook faster in pressure cooker ?
The trapped steam increases the atmospheric pressure inside the cooker by 15 pounds per square inch (psi), or 15 pounds above normal sea-level pressure. At that pressure, the boiling point of water is increased from 212°F to 250°F. This higher temperature is what cooks food faster.
✅Why does milk help with spicy food ?
Spicy foods contain a substance from chillies called capsaicin. Capsaicin stings taste buds, and milk binds with the hot capsaicin oils to disperse them. Cold water is not effective to mitigate spiciness because water-based liquids spread capsaicin and likely increase the burning sensation.
✅How does digital camera works ?
A digital camera takes light and focuses it via the lens onto a sensor made out of silicon. It is made up of a grid of tiny photosites that are sensitive to light. Each photosite is usually called a pixel, a contraction of "picture element". There are millions of these individual pixels in the sensor of a DSLR camera.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Join us
🆔 https://t.me/EducationFirst
📚EDUCATION📚
♻️ Education Brings Prosperity♻️