● Definition of plasma
Plasma is one of the four fundamental states of matter, along with solid, liquid, and gas. It is an ionized gas consisting of a collection of charged particles, including ions, electrons, and neutral atoms or molecules. Plasma can be found naturally in the universe in the form of stars, lightning, and auroras, but it can also be artificially created and controlled for
Introduction (What is plasma?)
1. Definition of plasma
Plasma is one of the four fundamental states of matter, along with solid, liquid, and gas. It is an ionized gas consisting of a collection of charged particles, including ions, electrons, and neutral atoms or molecules. Plasma can be found naturally in the universe in the form of stars, lightning, and auroras, but it can also be artif
1.1 New Renewable Energy
New Renewable Energy= new energy+ Renewable Energy
New energy : future energy
Renewable energy: almost indefinitely energy
condition
1 Replace petroleum
2 Carbon emits less than petroleum.
3 Sustainable energy can be used without depletion
features1.
fuel cell is a kind of generator that provides electricity, batteries are like warehouses that store electricity.
features2.
The maximum output energy from the battery
= 50% forms of energy+50% heat
=>The energy efficiency is 50%.
features3.
large energy density.
(store a lot of energy per weight)
Recently, as the amount of storage for capacito
What is Bioenergy?
Bioenergy is renewable energy made available from materials derived from biological sources. Biomass is any organic material which has stored sunlight in the form of chemical energy. As a fuel it may include wood, wood waste, straw, manure, sugarcane, and many other byproducts from a variety of agricultural processes.
So, Why do we produce Bioenergy?
One reason governments
The atmosphere shields us from the sun's cancer-causing ultraviolet (UV) radiation and also moderates the earth's climate.
The atmosphere is obviously vital for human existence, but we have nevertheless been polluting it for years.
The atmosphere is obviously vital for human existence, but we have nevertheless been polluting it for years.
The atmosphere can be divided vertically into four m
Political democracy inevitably contains the system of social inequality.
However democracy in detail contains the participation of majority in which the disadvantaged have real voice in society.
Hence democracy is possible only if there exists an institutional separation between the realm of politics and system of inequality.
Real Democracy only if based on overall distribution of power
C
면밀도:
A4 복사지 한 장의 면적과 질량을 측정하고 기록하라. 이 결과로부터 단위면적당 질량 즉 면밀도(surface density)를 구하라. 같은 종류의 종이의 임의 면적의 샘플(가위로 사다리꼴로 자른 샘플)에 대하여 질량을 재고서 이미 측정한 면밀도로 면적을 추정하라. 이 추정 면적과 자로 측정한 면적을