hi,
this is a much awaited reply of the post longwaited replies by ZERO.
I appreciate your endevour in digging out information and viewing the whole thing scientifically.
Your calculations are well performed and what i understand as a jist of it ,that human power can be limited upto 500 watts,but a vaccum cleaner may require upto 2200 watts,right?
But what i fail to understand is that how vaccum cleaner may run on just 150 watts?
I checked Eureka forbes website(http://www.eurekaforbes.com/products/product.php?catid=34&&prid=22)
and(http://www.eurekaforbes.com/products/product.php?catid=34&&prid=21)
and found this data:
For some product of theirs:
Rated Voltage 230 V AC, 50 Hz
Rated Current 0.65 amps
Rated Power 150 watts
Maximum Suction 4116 Pascals
(420 mm water column)
Dimension (l*d*h) 480 * 100 * 100 mm
Net Weight (main unit) 1.10 kg
Std. Accessories 4
And yet for another product,what you said was true:
Voltage 230 V AC, 50 HZ
Input power 2100 Watts
Suction 1600 mm/H20 or 15680 Pascals
Dimension (L * B * H) 400 * 355 * 500 mm
Net Weight 14.2 Kg
It boggles me how the first one runs on 150 watts power.
So,i think it might just not be impossible to build a mechanical vaccum cleaner.
What say?
Hugs for a great new year,
sameer
Saturday, December 30, 2006
Wednesday, December 06, 2006
Longawaited replies
This is to reply to two posts I found close to my heart.
Going by chronological order.
1. Mechanical vacuums.
This reply will be a bit technical but do excuse me.
Bernoulli's principle as far as I understand is a clever restatement of the law of coservation of energy. Hence I will proceed with conservation of energy itself to check the feasibility of a mechanical vacuum.
Let us consider that the vacuum has a circular cross section nozzle with a radius of 1 cm.
A standard vacuum generates 20kPa pressure difference between outside and inside.
By Bernoulli's principle,
(1/2)*d*v^2 = (P2-P1)
Thus, v = 180 m/sec
Now, Power = (energy)/time = ((1/2)*m*v^2)/t = (1/2) *d*A*v^3
= (1/2)*(pi*(o.o1^2))*1.2*180^3 = 1100 watts
Assuming a modest efficiency for the mechanics at 50%.
Total input power = 2200 watts.
Power output of a human being working hard physically = 500 watts.
Hence I would tend to believe this is not feasible.
NOTES :
d= 1.2 kg/ m^3......density of dry air.
Standard data such as pressure diff. in vacuums and output of a human courtesy Wikipedia.
2. Mission to the moon
Construction of moon bases is not as easy as it seems.
NASA's press release though impressive, I believe is over optimistic.
The ISS which is one thirtieth the distance to the moon remains incomplete inspite of regular shuttle flight and the co-operation of 16 countries. In this context it is highly improbable that a habitable base on the moon will be built within the next 50 yrs. Chandrayan has a more modest completion date i.e. by 2008.
More importantly if robots are to be sent than a moon base itself is irrelevant. The robot will survive of solar power and will explore when it is fully charged. Why would we need a moon base.
- By Zero.
P.S.
The last post on the moon issue was by me. Didn't realize my name wouldn't show up.
Going by chronological order.
1. Mechanical vacuums.
This reply will be a bit technical but do excuse me.
Bernoulli's principle as far as I understand is a clever restatement of the law of coservation of energy. Hence I will proceed with conservation of energy itself to check the feasibility of a mechanical vacuum.
Let us consider that the vacuum has a circular cross section nozzle with a radius of 1 cm.
A standard vacuum generates 20kPa pressure difference between outside and inside.
By Bernoulli's principle,
(1/2)*d*v^2 = (P2-P1)
Thus, v = 180 m/sec
Now, Power = (energy)/time = ((1/2)*m*v^2)/t = (1/2) *d*A*v^3
= (1/2)*(pi*(o.o1^2))*1.2*180^3 = 1100 watts
Assuming a modest efficiency for the mechanics at 50%.
Total input power = 2200 watts.
Power output of a human being working hard physically = 500 watts.
Hence I would tend to believe this is not feasible.
NOTES :
d= 1.2 kg/ m^3......density of dry air.
Standard data such as pressure diff. in vacuums and output of a human courtesy Wikipedia.
2. Mission to the moon
Construction of moon bases is not as easy as it seems.
NASA's press release though impressive, I believe is over optimistic.
The ISS which is one thirtieth the distance to the moon remains incomplete inspite of regular shuttle flight and the co-operation of 16 countries. In this context it is highly improbable that a habitable base on the moon will be built within the next 50 yrs. Chandrayan has a more modest completion date i.e. by 2008.
More importantly if robots are to be sent than a moon base itself is irrelevant. The robot will survive of solar power and will explore when it is fully charged. Why would we need a moon base.
- By Zero.
P.S.
The last post on the moon issue was by me. Didn't realize my name wouldn't show up.
Tuesday, December 05, 2006
Misson on moon.
I wrote a post before about the proposed manned mission on moon from India and a score of other nations. Then I told that there are few better options, rather than going for a manned mission on moon, and India should place a larger picture for the global audience. After all such things are just to show your international poweress.
NASA is now trying to make a permanent station on either of the poles of moon. It could have been ISRO's idea, if I would have been working with them. Yes it will take much more money than sending a man or two to the moon. But hey sending such rockets is not a monthly business, rather in many cases its a life time opportunity. So, tax more and make a thing which we can call The First. Moreover, to me, its a far better idea to set up a permanent station on moon, though not human, but robotic(NASA are going for manned station and I am not ready to pay that much tax).
It would certainly be working there for much more time than a human can work. And if some one tells me that India is not that good in robotics then I would like to remind them that Indian is possible to do any thing in a time span which is unimaginable by many others. We can easily develop robotics, more over this is era of multinational activities.
You can read my previous article here.
And a follow-up by my friend here.
NASA is now trying to make a permanent station on either of the poles of moon. It could have been ISRO's idea, if I would have been working with them. Yes it will take much more money than sending a man or two to the moon. But hey sending such rockets is not a monthly business, rather in many cases its a life time opportunity. So, tax more and make a thing which we can call The First. Moreover, to me, its a far better idea to set up a permanent station on moon, though not human, but robotic(NASA are going for manned station and I am not ready to pay that much tax).
It would certainly be working there for much more time than a human can work. And if some one tells me that India is not that good in robotics then I would like to remind them that Indian is possible to do any thing in a time span which is unimaginable by many others. We can easily develop robotics, more over this is era of multinational activities.
You can read my previous article here.
And a follow-up by my friend here.
Sunday, December 03, 2006
Youth Against AIDS.
Today I am happy, very happy that I have materialized one of my old dream, a truly social site against HIV, that too free of cost. I thought about it in summer last year, then now nearly after year and half, when I am deep in social blogging, after materializing few of my other projects suddenly this old idea of mine struck me once again on another World AIDS Day. I dont know weather this idea of mine is unique or not, it doesn't matter, the thing which matter is that we will need lot of people, that to youth to mobilize whole world against AIDS.
So make your presence felt at Youth Against AIDS
So make your presence felt at Youth Against AIDS
Monday, November 27, 2006
A mechanical Vaccuum.
This post is taken from my blog:flintsparks.blogspot.com
One of the ideas that i have is that of creating a light hand held and mechanical vaccum cleaner.
Most vaccum cleaners available in the market are electrical.but in India electricity is not a thing you can rely upon.also the major type of thing that needs to be cleaned up
is dust coz we don't have much of paved roads.
I thought about it and googled a bit too.
I found out that vaccum cleaners work on basis of bernouli's principle.In side the cleaner we have a strong current of air,hence less air pressure.
Out side air pressure is more.Hence things are sucked in from outside.
The most common principle of creating a high pressure is using a rotating disc with blades(just like a kiddy picture of sun).The whole disc moves and thus the velocity of air increases.
Replicating it,what we want to create is a system of gears which allows us to rotate the disc at high speed but with minimal effort.
I don't know how to do it.Do you?
Well said it is"in details lie all the miseries".
Keep trying.
One of the ideas that i have is that of creating a light hand held and mechanical vaccum cleaner.
Most vaccum cleaners available in the market are electrical.but in India electricity is not a thing you can rely upon.also the major type of thing that needs to be cleaned up
is dust coz we don't have much of paved roads.
I thought about it and googled a bit too.
I found out that vaccum cleaners work on basis of bernouli's principle.In side the cleaner we have a strong current of air,hence less air pressure.
Out side air pressure is more.Hence things are sucked in from outside.
The most common principle of creating a high pressure is using a rotating disc with blades(just like a kiddy picture of sun).The whole disc moves and thus the velocity of air increases.
Replicating it,what we want to create is a system of gears which allows us to rotate the disc at high speed but with minimal effort.
I don't know how to do it.Do you?
Well said it is"in details lie all the miseries".
Keep trying.
Sunday, November 26, 2006
Beg to differ
I felt that after Karthik's moon mission post we were all swept away by emotion
Here's a dose of objectivity :
It is not always technically possible to do all the stuff u said with robots.
A standard moon rover can go at a maximum of around 2km/hr easily outstripped by any fit human.
Secondly assembling stuff requires a lot of precession. On the IST they use a Canada Arm and I assure you, they dont come cheap. Most indegionous robotics would find it hard to remotely hammer a nail.
India as of now only has the capacity to launch Polar sattelites with certainty (2 successive GSLV tests have failed). Polar orbits are a complicated matter and the region is crowded with many sattelites (space traffic if u like). There is no way to launch an enormous survellaince net without causing global tension.
Currently a profitable proposition would be surveying the moon for minerals.
In conclusion sending an Indian to the moon may not be woth the money but sending a robot and producing truly original work, certainly would not be a lot easier.
Here's a dose of objectivity :
It is not always technically possible to do all the stuff u said with robots.
A standard moon rover can go at a maximum of around 2km/hr easily outstripped by any fit human.
Secondly assembling stuff requires a lot of precession. On the IST they use a Canada Arm and I assure you, they dont come cheap. Most indegionous robotics would find it hard to remotely hammer a nail.
India as of now only has the capacity to launch Polar sattelites with certainty (2 successive GSLV tests have failed). Polar orbits are a complicated matter and the region is crowded with many sattelites (space traffic if u like). There is no way to launch an enormous survellaince net without causing global tension.
Currently a profitable proposition would be surveying the moon for minerals.
In conclusion sending an Indian to the moon may not be woth the money but sending a robot and producing truly original work, certainly would not be a lot easier.
Saturday, November 25, 2006
Suggestions for better democracy.
Crazy, you can all me, but I won't shy away from proposing some constitutional change or to say a demand for better performance of our central government. I recently read, which many of you would have read, that India is one the failed democracies, though I don't buy there vision and neither there methodology, but still there are many things which can be improved to make ours a better democracy. One of them I think, which I am proposing over here is as follows:
Every party which is going to run for say minimum of 300 seats out of some 550+ seats in Lok Sabha elections, should before election declare there prime-minister candidate. And those who are in no position to nominate there PM candidate, which means that they are running for less than 300 seats, have to before hand support any of the Prime minister candidate. It would certainly tell us the people a clear picture of future, and thus make it easy to select candidate of our region. It will thus make parties answerable to public beforehand. It must also be made necessary for every candidate to (on there own money) publish their biodata in at least 2 popular local dailies.
I also feel that there must be some legal paper signed just like contracts between two parties before an alliance, which should be made public, and this must be done before election, so that people who vote should have a clear picture of parties and people for whom they are going to vote. This will avoid development of any future crap. And a much stable democratic structure. I think we should make democracy for our need and should break away from a highly borrowed up democratic system. India is a very unique nation, which absorbed democracy like no other nation that too after long autocratic rule. If any person comes up and say that India is failure in terms of a democracy then I would ask him to visit India, a nation of such a magnum opus society, with such a variety of cultures available, and with a very long history.
These are few potpourri views, which will only work better if reviewed by many others. So I will love to read comments on it.
Every party which is going to run for say minimum of 300 seats out of some 550+ seats in Lok Sabha elections, should before election declare there prime-minister candidate. And those who are in no position to nominate there PM candidate, which means that they are running for less than 300 seats, have to before hand support any of the Prime minister candidate. It would certainly tell us the people a clear picture of future, and thus make it easy to select candidate of our region. It will thus make parties answerable to public beforehand. It must also be made necessary for every candidate to (on there own money) publish their biodata in at least 2 popular local dailies.
I also feel that there must be some legal paper signed just like contracts between two parties before an alliance, which should be made public, and this must be done before election, so that people who vote should have a clear picture of parties and people for whom they are going to vote. This will avoid development of any future crap. And a much stable democratic structure. I think we should make democracy for our need and should break away from a highly borrowed up democratic system. India is a very unique nation, which absorbed democracy like no other nation that too after long autocratic rule. If any person comes up and say that India is failure in terms of a democracy then I would ask him to visit India, a nation of such a magnum opus society, with such a variety of cultures available, and with a very long history.
These are few potpourri views, which will only work better if reviewed by many others. So I will love to read comments on it.
Monday, November 20, 2006
A new addition...
So many others have joined the roost. I want more... we all want more... don't we.
OK, so why am I writing this post? I am not writing this to congratulate ourselves for our new found activeness but to inform you about a major addition or to say a major change in site.
Look towards right...
Yes the Creative Commons logo, so now on our blog is under creative license, you all can read it in detail. But if any one of you want to post some thing under a different agreement they you are free to do so, but please don't forget to mention it in bolds. I with my sincere heart would appreciate if you follow the open source regime, but I also agree that few things just cant be kept open source, so be it.
We Indians from long time have followed the regime of open source, this can be seen from the number of effective patents against over names. Jokes apart, here we are and now looking towards a much brighter future.
_____________________________________________________________________
Another addition to mention, again look towards your right and scroll down. Yes a facility for users to interact with us, its a voice commenting facility. I think its cool.
Looking forward for your comments, oral ones.
OK, so why am I writing this post? I am not writing this to congratulate ourselves for our new found activeness but to inform you about a major addition or to say a major change in site.
Look towards right...
Yes the Creative Commons logo, so now on our blog is under creative license, you all can read it in detail. But if any one of you want to post some thing under a different agreement they you are free to do so, but please don't forget to mention it in bolds. I with my sincere heart would appreciate if you follow the open source regime, but I also agree that few things just cant be kept open source, so be it.
We Indians from long time have followed the regime of open source, this can be seen from the number of effective patents against over names. Jokes apart, here we are and now looking towards a much brighter future.
_____________________________________________________________________
Another addition to mention, again look towards your right and scroll down. Yes a facility for users to interact with us, its a voice commenting facility. I think its cool.
Looking forward for your comments, oral ones.
Fighting Nothingity.
Ok, I agree that this is not one of my best poem, but since I have kept it open sourced then, I will accept any kind of change.
Nothinity will bring red lines in MS Word, to indicate that there is no such word, but I think I can bring some of crap in already craped up english, to make it according to my taste.
Fighting nothinity.
Fighting the lark of golden light,
Amazing visions blinding me in dark.
Thoughts in flow shall stand tall,
I am being pressed against the wall.
War cry is what i hear every day,
Typhoons and tycoons are looting us away.
I want to fight them out,
Presently I am stalled, stalled till death.
Fight, fight is cry from every corner,
Fight fight, is the music i hear.
Fight, fight is what i shy from.
But still i will fight nothingity.
This state, state of hell,
no money, no kebabs and finding driest well.
Still i will win, is cry from soul.
After fighting i will leave it around the door.
If you like ant single line of the poem then please do mention it. I will certainly love appreciation.
Nothinity will bring red lines in MS Word, to indicate that there is no such word, but I think I can bring some of crap in already craped up english, to make it according to my taste.
Fighting nothinity.
Fighting the lark of golden light,
Amazing visions blinding me in dark.
Thoughts in flow shall stand tall,
I am being pressed against the wall.
War cry is what i hear every day,
Typhoons and tycoons are looting us away.
I want to fight them out,
Presently I am stalled, stalled till death.
Fight, fight is cry from every corner,
Fight fight, is the music i hear.
Fight, fight is what i shy from.
But still i will fight nothingity.
This state, state of hell,
no money, no kebabs and finding driest well.
Still i will win, is cry from soul.
After fighting i will leave it around the door.
If you like ant single line of the poem then please do mention it. I will certainly love appreciation.
Sunday, November 19, 2006
Society (1)
Society --A school of fish -- never blinking, mouths opening and closing all the while, swimming about in tightly-knit groups, trying to not get eaten by bigger fish.
A school --
They teach us --
"Always keep your eyes open and on your target; blink and it'll be gone"
So, they teach us to not blink.
"Speak up! Else, someone else will speak up and usurp your position in Society!"
So, they teach us to open and close our mouths, perpetually.
"One who cannot live in Society is either a SAVAGE BEAST or GOD -- most often the former one"
So, they teach us to despise being alone -- find a group or perish.
Q. I'm a son and a brother; can anyone usurp my positions as these?
A. You speak of your position in Family. Society bears a semblance to Family, yes; but the similarity ends there. The qualities possessed by Family may never be possessed by Society.
Q. Society means a group of individuals living together with mutual understanding -- this definition fits a family too...
A. Mutual understanding? No. Your definition is specific to a certain type of Society -- 'harmonious Society'
When more questions shall be asked, more answers shall be given.
This is not to say that all these answers are 'right' or anything of that sort; this is merely a discussion. You are welcome to join in.
Saturday, November 11, 2006
Manned mission on moon.
India is planning for a manned mission on moos for year 2020, China is targeting 2024, Malasiya 2020 and Pakistan 2020. Pretty nice isnt it. Hindi Chini Pakistani bhai bhai on moon. Bull s#!t.
There is one fact that I know, US gained far less things on moon from Neil Armstrong then they are gaining from Mars Roover. Be intelligent, this is no cold war era, there is no need to prove any thing.
I would, as all ways give kattak suggestions.
- Invest money on detective satellites, for global surveillance. Because whole world need proof for you know who…and what…
- Invest money on robotic mission.
- Make a base over there on moon, which can run for a decade.
- Plan for a telescope on moon.
- Plan for a robotic biological lab on moon containing microbes to test for life sustainability under controlled environment.
Let me tell you and all the scientists in ISRO, above options are far more respectful than a manned mission on moon, at least scientific community and future generation will respect our acts. Above options will have far more far reaching effects than a 2 hour walk of man on moon surface.
Another suggestion…
[/pj]Why not make a all religion worship place over there on moon for future generation and aliens who fear to come down on earth.[/pj]
Tuesday, October 17, 2006
Untitled by Sudeep Pagedar
Good day, kind person.
My name is Prince Obatawanakinashitohanomoha of Zwazeitrangapultu. I am sure you have heard about the violent civil war in my country, some years ago.
My father, King Waritashatiklikosobrutanajiginomoha was the leader of the Krutsoshimenahaligoropisbenatasha Army (also known as the Royal Guard). Sadly, he was killed while making a brave attempt to sneak up from behind on an evil enemy general and slip a grenade down his shirt. Alas, the evil general (known to all in Zwazeitrangapultu as 'Average Joe' -- a strange term, yes, but it makes him sound very, very bad...which he is) survived. Soon after my father's demise, Average Joe overthrew the Krutsoshimenahaligoropisbenatasha regime and came to power in the summer of 1969. I was but a child then and those were the worst days of my life. I was sent in exile to a strange land whose name I cannot pronounce (but this is how it is spelled -- HARLEMNEWYORK) and the Royal Hut, the family residence since the last eight hundred years (or maybe eighty...I can't remember which) was taken over by Average Joe. He was searching for my fortune --- which I have with me here in Harlemnewyork --- of seven hundred antelope-skulls. Even today he continues to search. His agents are all over the world. It is only a matter of some time before they find me. Even in Harlemnewyork I am not safe -- all the residents look like my countrymen and everyone looks at me with strange eyes and makes signs of raised middle-fingers, when they see me counting my treasure which I carry with me wherever I go. I think I am being warned. Therefore I have an urgent need of finding safekeeping for my wealth. I have absolutely no idea who you are and have never met you in my entire life. I therefore feel you are a very trustworthy person whom I can have complete faith in. Would you want a share of my fortune? I know you would. No sane person -- and you are a most sane person -- would turn down my generous offer:
In exchange for keeping my fortune safe, I will give to you 3% of it -- twenty-one skulls of Zwazeitrangapultudian antelopes. You will not find any such skulls anywhere in the world; I am proud to say, this animal was made extinct by my Great Ancestors many, many moons ago. Now I will reveal to you a plan which you must not reveal to anyone; especially not to Average Joe, if he contacts you. (If he does that, deny knowing me and then run away to a remote part of your country where the weather is harsh and the vegetation is sparse -- your safety is of utmost concern to me.)
My good friend, I am planning to stage a coup in...say...a few years or so. Average Joe is old and will not live much longer. When he dies, his three-year-old son (who is the eldest of all his 29 sons) will become the new King. That is when I will make my move and most bravely snatch the throne from under him, pun intended. It will be like taking candy from a baby. Once I become the new King of Zwazeitrangapultu, my first act will be to invite you over to my country as an honoured State Guest and together, we will go hunting and try to make some other species of four-legged creature extinct. I am certain a person as wise and kind as you will not refuse. You must help me out or else there is no hope for me.
Visualise those white antelope skulls, my friend...keep that image in mind and contact me as soon as you can, expressing your eagerness to assist me. I have a lawyer who will flawlessly conduct the transaction -- he refuses to wear clothes; but in my country, clothes are a sign of poverty...and my lawyer, he is a very rich man. (I am a rich man too, you understand?)
There will be no need for Swiss bank accounts either. All you will need is a large room to store the bounty safely. I am looking forward to hearing from you.
Yours sincerefully,
Prince Obatawanakinashitohanomoha of Zwazeitrangapultu, son of the now-diseased King Waritashatiklikosobrutanajiginomoha of Zwazeitrangapultu
(p.s. you may have received some emails from a Nigerian widow asking to share her fortune with you. She is my aunt. Please trust her blindly and send her all your details, from your bank account number to which colour you want your 'surprise gift' in -- oops, shouldn't have said that here..excited, aren't you? Send all details now! Hurry!
Her lawyer is also very good; he wears clothes...but then he isn't from Zwazeitrangapultu and the customs of the outside world are indeed very strange.)
My name is Prince Obatawanakinashitohanomoha of Zwazeitrangapultu. I am sure you have heard about the violent civil war in my country, some years ago.
My father, King Waritashatiklikosobrutanajigino
In exchange for keeping my fortune safe, I will give to you 3% of it -- twenty-one skulls of Zwazeitrangapultudian antelopes. You will not find any such skulls anywhere in the world; I am proud to say, this animal was made extinct by my Great Ancestors many, many moons ago. Now I will reveal to you a plan which you must not reveal to anyone; especially not to Average Joe, if he contacts you. (If he does that, deny knowing me and then run away to a remote part of your country where the weather is harsh and the vegetation is sparse -- your safety is of utmost concern to me.)
My good friend, I am planning to stage a coup in...say...a few years or so. Average Joe is old and will not live much longer. When he dies, his three-year-old son (who is the eldest of all his 29 sons) will become the new King. That is when I will make my move and most bravely snatch the throne from under him, pun intended. It will be like taking candy from a baby. Once I become the new King of Zwazeitrangapultu, my first act will be to invite you over to my country as an honoured State Guest and together, we will go hunting and try to make some other species of four-legged creature extinct. I am certain a person as wise and kind as you will not refuse. You must help me out or else there is no hope for me.
Visualise those white antelope skulls, my friend...keep that image in mind and contact me as soon as you can, expressing your eagerness to assist me. I have a lawyer who will flawlessly conduct the transaction -- he refuses to wear clothes; but in my country, clothes are a sign of poverty...and my lawyer, he is a very rich man. (I am a rich man too, you understand?)
There will be no need for Swiss bank accounts either. All you will need is a large room to store the bounty safely. I am looking forward to hearing from you.
Yours sincerefully,
Prince Obatawanakinashitohanomoha of Zwazeitrangapultu, son of the now-diseased King Waritashatiklikosobrutanajigino
(p.s. you may have received some emails from a Nigerian widow asking to share her fortune with you. She is my aunt. Please trust her blindly and send her all your details, from your bank account number to which colour you want your 'surprise gift' in -- oops, shouldn't have said that here..excited, aren't you? Send all details now! Hurry!
Her lawyer is also very good; he wears clothes...but then he isn't from Zwazeitrangapultu and the customs of the outside world are indeed very strange.)
Saturday, March 11, 2006
First thought
Poor is the man whose pleasures depend on permission of others.
This is by all famous Madona, so true, isnt it?
I ask all of you to contemplate, and give your own thoughts.
This is by all famous Madona, so true, isnt it?
I ask all of you to contemplate, and give your own thoughts.
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