Sat, October 7, 2017 at 12:45 pm GMT
Hello madam Judy
It is my hope you are doing fine with everything,today i want to share with you about the type of plane called AIRSHIP
An airship or dirigible is a type of aerostat or lighter-than-air aircraft that can be steered and propelled through the air using rudders and propellers or other thrust mechanisms. Unlike aerodynamic aircraft such as fixed-wing aircraft and helicopters, which produce lift by moving a wing through the air, aerostatic aircraft stay aloft by having a large "envelope" filled with a gas which is less dense than the surrounding atmosphere. The first lifting gas used was hydrogen, although this had well-known concerns over its flammability. Helium was rare in most parts of the world, but large amounts were discovered in the USA. This meant that this non-flammable gas was rarely used for airships outside of the USA. All modern airships, since the 1960s, use helium.
The main types of airship are non-rigid (or blimps), semi-rigid and rigid. Blimps are "pressure" airships where internal pressure, maintained by forcing air into an internal ballonet, is used to both maintain the shape of the airship and its structural integrity. Semi-rigid airships maintain the envelope shape by internal pressure, but have some form of internal support such as a fixed keel to which control and engine gondolas and stabilizers and steering surfaces are mounted. Rigid airships have a structural framework which maintain the shape and carries all loads such as from gondolas, engines. The framework contains numerous balloons, known as "gas cells" or "gasbags" which supply the static lift without having to bear any structural loading. Rigid airships are often called Zeppelins, as the type was invented by Count Zeppelin and the vast majority of rigid airships built were manufactured by the firm he founded.
Airships were the first aircraft to enable controlled, powered flight, and were widely used before the 1940s, but their use decreased over time as their capabilities were surpassed by those of aeroplanes. Their decline continued with a series of high-profile accidents, including the 1937 burning of the hydrogen-filled Hindenburg, and the destruction of the USS Akron. Airships are still used today in certain niche applications, such as advertising, freight transportation, tourism, camera platforms for sporting events, geological surveys, aerial observation and interdiction platforms, where the ability to hover in one place for an extended
period outweighs the need for speed and maneuverability.
For today that's all i want to tell you,like before i continue wish much blessing from GOD.
This is the AIRSHIP i was trying to give you its explanation.
Sat, September 30, 2017 at 11:42 am GMT
Hello madam Judy
How are you,I am fine and also today i want to tell you that i expect to do per-national examination then national examination so my intention to write to you this is to inform you that I'm continuing studying hard so as i will achieve my goals.
Finally,i know that with God's bless what am to be achieving will be successful.
Also to you i wish much bless so as you will continue giving us a heart to still work hard.
That's all i want to tell you today.
Sat, September 23, 2017 at 12:53 pm GMT
Hello madam Judy
It has been long as many students want to see you everyday since you met us but we all appreciate about your coming, because we didn't get a chance to see even your face. You will think why i write to you this journal, I wanting just to show you my appreciation about your visiting to us.
That's all I want to tell you today, wish you long live so as you will continue visiting us.
Sat, August 19, 2017 at 5:36 pm GMT
My fellow student:
Welcome back to school! This is a new semester, it is time for new goals. new ideas and new learning.
At end of last semester, I wrote to you to write to me about the most remarkable or important thing that happened to you during your holiday! I am looking forward to reading your reply when you next write your journal.. Now while I really interested in what are you taking this year what will be your favorite subjects.
Knowledge will give you the power to be known you must read everything you can the more you know the more valuable you will be as a person and to your society.
I am coming to Tanzania at end of August and beginning the September.
I am looking forward to seeing you all.
Have fun and stay focuse! Best wish for all of you!
Sat, August 19, 2017 at 3:12 pm GMT
Hello madam Judy
It's my hope that you are doing fine with everything especially your health.Simply today I want to share with you about environmental polllution.Environmental pollution is the process by which environment is being affected by wastes.There are four types of pollution which are soil pollution,air pollution,land pollution and also water pollution.As the environment is being affected also humans and their activities are affected so as for environment to escape from this,I think there must be proper management of wastes which is a major factor of environmental pollution.For today thats all.
Cornelius
Sat, August 12, 2017 at 2:54 pm GMT
Hello madam Judy
How are you,as I know you will have a journey to our Tanzania.Me,here in Tanzania I'm fine with everything include my studies.Today i want to share with you about ROCK.
In geology, rock is a naturally occurring aggregate of minerals and/or mineraloids. The Earth's lithosphere is made of rock. In general rocks are of three types, namely, igneous, sedimentary, and metamorphic. Petrology is the scientific study of rocks.
Rock classification
The rocky side of a mountain creek near Orosí, Costa Rica.
Rocks are classified by mineral and chemical composition, by the texture of the constituent particles and by the processes that formed them. These indicators separate rocks into igneous, sedimentary and metamorphic. They are further classified according to particle size. The transformation of one rock type to another is described by the geological model called the rock cycle.
Igneous rocks are formed when molten magma cools and are divided into two main categories: plutonic rock and volcanic. Plutonic or intrusive rocks result when magma cools and crystallizes slowly within the Earth's crust (example granite), while volcanic or extrusive rocks result from magma reaching the surface either as lava or fragmental ejecta (examples pumice and basalt) .
Sedimentary rocks are formed by deposition of either clastic sediments, organic matter, or chemical precipitates ( evaporites), followed by compaction of the particulate matter and cementation during diagenesis. Sedimentary rocks form at or near the Earth's surface. Mud rocks comprise 65% ( mudstone, shale and siltstone); sandstones 20 to 25% and carbonate rocks 10 to 15% ( limestone and dolostone).
Metamorphic rocks are formed by subjecting any rock type (including previously-formed metamorphic rock) to different temperature and pressure conditions than those in which the original rock was formed. These temperatures and pressures are always higher than those at the Earth's surface and must be sufficiently high so as to change the original minerals into other mineral types or else into other forms of the same minerals.That is the explanation of rock from what i read.
Have good health till you arrive at Tanzania
Sat, July 29, 2017 at 12:30 pm GMT
Hello Anthony
It is nice to share with you something.Today I will share about CONTACT BETWEEN AFRICANS AND PEOPLE FROM ASIA.During pre colonialism African people were enter into contact with people from middle and far east in Asia,this contact was dated back early in 200BC.
These people from middle and far east were traveling towards Africa by using monsoon wind,these were coming to Africa for some reasons,motive or I can say aims which are;
Traders wanted to trade and control all commercial activities along African coast.
Second is they need to spread Islamic religion in African societies.
Also they were searching for an area for market to supply and sell their commodities.
Other visitors were in searching of peaceful area to settle for along time.
Lastly is they were searching for natural resources.Finally i saw in this contact the one who was getting benefit was Asian people because even in exchanging of goods Asian people were exchanging small things with useful resources example exchange dagger with ivory.So that is what I wanted to share with you today.
Waiting hearing from you how you look on this sharing,Have nice days.
Cornelius
