Science has done more harm than good?

Science has done more harm than good?

Science has caused some atrocities, however it is also solely responsible for the survival of the sheer majority of the population.

For example. A single ammonia producing process (for fertiliser) discovered by science is now responsible for feeding 40% of the worlds population. That is about 3 billion people sustained by a single scientific process. However modern weapons would not exist without science. Science has been mostly applied for good, however there are a large amount of evils as a result too.

Science is neutral, what matters is how humans have applied it.

Name any 5 precautionary measures inside the laboratory?

Name any 5 precautionary measures inside the laboratory?

1. Familiarize your self with the laboratory.
2. Use a safety gear when necessary - particularly eye protection.
3. Follow your teacher's directions.
4. Practice correct or proper procedure in handling liquids.
5. Use your common sense.

6. Never smell a liquid reagent directly .
7. Never pour back a reagent in main bottle .
8. Don't eat or drink in lab.

9. Use fuming hood while working with volatile liquids .

When was nylon invented and do the letters NY and LON stand for New York and London?

When was nylon invented and do the letters NY and LON stand for New York and London?


 Nylon was invented by Wallace Carothers in 1935. There was a great demand for it as it was used for parachutes and tires. It is still used today in toothbrushes, stockings, fishing products, etc. A "nylon commuter" is someone who commutes between New York and London.
A number of "Brand Names " were developed by the inventing company, DUPONT Chemicals, such as NYLON, BANLON, ORLON and RAYON. All were types of woven textiles. Jim Bunting. Toronto. Actually, Jim, rayon was invented around 1885 and it is not a synthetic fiber as were the ones invented by DuPont. Instead, the original rayon was a regenerated cellulose (made from cotton linters and wood pulp).
Yes it does stand for New York and London as it was created by scientists from the locations. No it doesn't--see notes above.
In the UK we have a programme on the telly, hosted by Stephen Fry, called QI (Quite Interesting) & it assured me when I saw it recently that Nylon is nothing to do with New York & London ! Correct! See notes above.
Final answer, Nylon was not named after New York and London.

Why Clouds are White

 Why Clouds are White



 Not all clouds are pure white, however, for those that are white, it is due to their altitude and the reflection of sunlight.
For example, a cirrus cloud has an altitude of approximately 8km above sea level. At such extreme altitudes all high-level clouds are made up only of ice crystals, as the water vapor from which they are initially formed has frozen.
The ice crystals reflect sunlight. When flying above clouds during the day, they are always bright white. When we get dark clouds, they are so thick that they soak up most of the sunlight or reflect it upwards, and so things aren't as bright below. Storm clouds are the thickest clouds, and look the darkest from down below, though they still look bright white if we see them from above.

Gray color of the clouds is caused by higher clouds casting their shadow on lower-based clouds, or that the clouds are so dense that their top parts absorb most of the sunlight, casting their own shadow along their base, making them dark on the bottom. 

How does snow form?

How does snow form?

High up in the atmosphere, the air temperature is very cold. The water vapour may fall as rain if the water does not freeze. However, if the air temperature is so cold that the water droplets freeze, tiny ice crystals form in the clouds. These ice crystals collide with each other in the clouds or grow delicate shapes. The ice crystals combine to form snowflakes. There may be hundreds of tiny ice crystals in a single snow flake. These snow flakes fall from the clouds to form snow on the ground.

If the air temperature is not too cold and the air is very moist, the snow flakes may grow into very large flake up to 1 or 2 centimetres across.

Every snow flake is different. However, each snow flake has 6 sides.

What is sleet?

What is sleet?

When the air temperature is very cold, water vapour in clouds may fall as sleet, hail, or snow. Water droplets in the clouds get cold, but may not freeze completely. Sleet forms when partially frozen water droplets, or rainwater, in the clouds falls and freezes completely when it hits the surface of the Earth.

Like freezing rain, sleet may be dangerous because it coats roads and sidewalks with ice. Cars may not be able to stop on the slippery roads and many collisions between cars may occur. Slippery sidewalks are very difficult to walk along.

What is freezing rain?

What is freezing rain?

When the air temperature is very cold, water vapour in clouds may fall as sleet, hail, or snow. Water droplets in the clouds get cold, but may not freeze. Under certain circumstances, the temperature of the water droplet may drop below the freezing temperature of water, but the water remains in the liquid state. This water is super-cooled. When super-cooled water falls to the surface of the Earth, the water freezes instantly on any surface it hits. This is called freezing rain.

Freezing rain may cause lots of damage. Trees and power lines may break under the weight of the heavy ice. Cities may have to go without electricity when major power lines are broken.

How do clouds form?

How do clouds form?

As warmer air pass over the ocean or large open lakes, the air picks up water vapour. As the air warms, it rises because warm air is less dense than cold air. As the warm air rises, the air cools and the water vapour in the air condenses to form clouds of water droplets.

Clouds that form at the surface of the Earth are known as fog.

What is potential energy?

What is potential energy?

Potential energy is stored energy. An apple sitting on the edge of a table has stored potential energy. The potential energy changes to kinetic energy when the apple falls to the ground. A compressed spring has potential energy. That potential energy is converted to kinetic energy when the compressed spring is released.

What is energy?

What is energy?

Energy is the capacity to do work. Our energy comes from food, which contains stored chemical energy. Our bodies take the stored chemical energy and converts it to mechanical energy, heat energy or other forms of energy.

Light, sound, heat, and electricity are forms of energy