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Introducing minecraft

Any topic related to science can be discussed here.
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minecraft
Posts: 32
Joined: November 20th, 2013, 10:14 am

Introducing minecraft

#1 Post by minecraft » November 26th, 2013, 4:58 pm

Hi everyone, I am the son of Compassionist. I am eight years old. I like asking questions and finding out answers.

Compassionist
Posts: 3590
Joined: July 14th, 2007, 8:38 am

Re: Introductions...

#2 Post by Compassionist » November 26th, 2013, 5:01 pm

minecraft wrote:Hi everyone, I am the son of Compassionist. I am eight years old. I like asking questions and finding out answers.
:welcome: to the forum my son. Hope you find all the answers you are looking for. :D :party: :party: :party: :party: :party: :party: :party: :party:

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Alan H
Posts: 24067
Joined: July 3rd, 2007, 10:26 pm

Re: Introductions...

#3 Post by Alan H » November 26th, 2013, 5:09 pm

Hi minecraft and :welcome:


Please feel free to ask whatever questions you like and we'll do our best to answer them as best we can!
Alan Henness

There are three fundamental questions for anyone advocating Brexit:

1. What, precisely, are the significant and tangible benefits of leaving the EU?
2. What damage to the UK and its citizens is an acceptable price to pay for those benefits?
3. Which ruling of the ECJ is most persuasive of the need to leave its jurisdiction?

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Dave B
Posts: 17809
Joined: May 17th, 2010, 9:15 pm

Re: Introductions...

#4 Post by Dave B » November 26th, 2013, 5:51 pm

Hello minecraft, you may be able to answer some of our questions as well, been an awful long time since I was eight!!! :D
"Look forward; yesterday was a lesson, if you did not learn from it you wasted it."
Me, 2015

Nick
Posts: 11027
Joined: July 4th, 2007, 10:10 am

Re: Introductions...

#5 Post by Nick » November 26th, 2013, 6:25 pm

Hello Minecraft, and welcome to the forum :wave:

lewist
Posts: 4402
Joined: July 4th, 2007, 8:53 pm

Re: Introductions...

#6 Post by lewist » November 26th, 2013, 7:30 pm

Hi, Minecraft and welcome to the Forum. Ask away! :)
Carpe diem. Savour every moment.

Fia
Posts: 5480
Joined: July 6th, 2007, 8:29 pm

Re: Introductions...

#7 Post by Fia » November 26th, 2013, 8:27 pm

A big warm :welcome: minecraft. We don't always have answers but we have a lot of fun thinking about questions :)

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draykorinee
Posts: 245
Joined: September 21st, 2013, 11:10 am

Re: Introductions...

#8 Post by draykorinee » November 26th, 2013, 8:30 pm

Alright minecraft, welcome to the forums.
sanctimonious
ˌsaŋ(k)tɪˈməʊnɪəs/Submit
adjectivederogatory
1.
making a show of being morally superior to other people.

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getreal
Posts: 4354
Joined: November 20th, 2008, 5:40 pm

Re: Introductions...

#9 Post by getreal » November 26th, 2013, 8:48 pm

Hi Minecraft and DanRea!

:thumbsup:

Why did you choose your particular name, Minecraft?
"It's hard to put a leash on a dog once you've put a crown on his head"-Tyrion Lannister.

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Alan H
Posts: 24067
Joined: July 3rd, 2007, 10:26 pm

Re: Introductions...

#10 Post by Alan H » November 26th, 2013, 11:03 pm

getreal wrote:Why did you choose your particular name, Minecraft?
Oh dear. Even an oldie like me knows the answer to that one!

Do you play much minecraft, minecraft?
Alan Henness

There are three fundamental questions for anyone advocating Brexit:

1. What, precisely, are the significant and tangible benefits of leaving the EU?
2. What damage to the UK and its citizens is an acceptable price to pay for those benefits?
3. Which ruling of the ECJ is most persuasive of the need to leave its jurisdiction?

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Tetenterre
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Joined: March 13th, 2011, 11:36 am

Re: Introductions...

#11 Post by Tetenterre » November 26th, 2013, 11:25 pm

Hello & welcome, minecraft. Asking questions is the only way any of us truly advances. Please don't be disheartened if we don't have answers, only more questions.

Sent from my GT-I9100 using Tapatalk 2
Steve

Quantum Theory: The branch of science with which people who know absolutely sod all about quantum theory can explain anything.

minecraft
Posts: 32
Joined: November 20th, 2013, 10:14 am

Re: Introductions...

#12 Post by minecraft » November 27th, 2013, 4:48 pm

Alan H wrote:
getreal wrote:Why did you choose your particular name, Minecraft?
Oh dear. Even an oldie like me knows the answer to that one!

Do you play much minecraft, minecraft?
Thank you to everyone for the warm welcome. Minecraft is one of my favourite games. That's why I chose it as my username. I play it almost everyday on Xbox 360 and on PC. You can ask me questions if you like.:question: :question: :question: :question: :question: :question: I have a question. If you travelled faster than light would time go backwards? :question: :question: :question: :question: :question: :question:

Fia
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Joined: July 6th, 2007, 8:29 pm

Re: Introductions...

#13 Post by Fia » November 27th, 2013, 8:31 pm

What a good question, minecraft :) I don't know.

But as yet I don't think we know of anything that travels faster than light. I think we need someone who knows more about theoretical physics than me. And who can explain in an understandable way... any offers good people? :)

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Alan H
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Re: Introductions...

#14 Post by Alan H » November 27th, 2013, 9:22 pm

minecraft wrote:I have a question. If you travelled faster than light would time go backwards? :question: :question: :question: :question: :question: :question:
We do know that if you travel at any speed, time moves more slowly for you. We don't notice this in our everyday lives because it only changes be a very, very, very, very, very small amount - far too small for us to be aware of. But time goes more slowly the faster you move and things like satellites that orbit the earth have to know this and adjust their clocks. But it's still a very small amount.

Think about this: if you had a twin and one of you travelled out into space and went very, very fast to the nearest star and then came back to earth, your twin would be younger than you! How amazing is that? This was a 'thought experiment' that Albert Einstein did a hundred years ago. It was just a 'thought experiment' because it wasn't something he could do - they didn't even have spaceships then! But we still can't really do that because, although we have spaceships now, they can't go fast enough for the twin to be any younger that we would notice. But, the astronauts that have been up in the International Space Station flying around the earth are younger than they would have been if they had stayed on the earth! But they are younger by a tiny, tiny bit of a second, so no one will ever notice!
Alan Henness

There are three fundamental questions for anyone advocating Brexit:

1. What, precisely, are the significant and tangible benefits of leaving the EU?
2. What damage to the UK and its citizens is an acceptable price to pay for those benefits?
3. Which ruling of the ECJ is most persuasive of the need to leave its jurisdiction?

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Dave B
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Joined: May 17th, 2010, 9:15 pm

Re: Introductions...

#15 Post by Dave B » November 27th, 2013, 9:46 pm

[Edit]
Alan you are not entirely clear as to which twin will be the older, it is the twin left behind that ages the more, the traveller will be the younger. The Twin Paradox. I do know that after a year of travelling at the speed of light you will still be a year older to yourself (and about 9 500 000 000 000 kilometers away!) The four hours between breakfast and lunch will still be, for you, four hours long and you will be just as hungry.

Good old Albert imagined looking at a clock face and moving away from it at the speed of light, you would always see the clock as it was at that time, say 12 noon, because you would be moving with a "slice" of time. So for you, the traveller, time in the rest of the Universe will have seemed to have come to a halt. Someone likened "space time" to a sausage, as wide and as high as the Universe as it expands and as long as time itself and getting longer with every instant.

What happens if you go faster than light? According to Albert's idea it seems you would catch up with earlier images of the clock, say at 11.59am. But have you travelled back through time? The only way that can be meaningful would be to be able to travel away from Earth at, say, a hundred times the speed of light for a year and then come back to see some event that happened back in time. It seems logical that this can happen but I have this horrible feeling that does not work that way.

Now, if you could go from standstill to faster than the speed of light immediately, travel in a circle to come back to Earth then instantly come to a stop . . . But this can only be another of those "thought experiments" until the scientists come up with a way to try it out for real. Don't hold your breath!

Can TT or anyone else expand on this?
"Look forward; yesterday was a lesson, if you did not learn from it you wasted it."
Me, 2015

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Alan H
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Joined: July 3rd, 2007, 10:26 pm

Re: Introductions...

#16 Post by Alan H » November 27th, 2013, 10:22 pm

Dave B wrote:Alan you are not entirely clear as to which twin will be the older, it is the twin left behind that ages the more, the traveller will be the younger.
Ah. Good point. It's the one who travelled that would be younger than the one who stayed on earth. But, as you say, for each of them, time would appear to pass at the same rate and neither of them would notice any difference. It's only when they meet again that they would notice the difference.

I hope you don't have a twin, minecraft? Could your Dad cope with two of you? :D
Alan Henness

There are three fundamental questions for anyone advocating Brexit:

1. What, precisely, are the significant and tangible benefits of leaving the EU?
2. What damage to the UK and its citizens is an acceptable price to pay for those benefits?
3. Which ruling of the ECJ is most persuasive of the need to leave its jurisdiction?

minecraft
Posts: 32
Joined: November 20th, 2013, 10:14 am

Re: Introductions...

#17 Post by minecraft » November 28th, 2013, 1:33 pm

Alan H wrote:
Dave B wrote:Alan you are not entirely clear as to which twin will be the older, it is the twin left behind that ages the more, the traveller will be the younger.
Ah. Good point. It's the one who travelled that would be younger than the one who stayed on earth. But, as you say, for each of them, time would appear to pass at the same rate and neither of them would notice any difference. It's only when they meet again that they would notice the difference.

I hope you don't have a twin, minecraft? Could your Dad cope with two of you? :D
Thank you to everyone who answered my question about travelling faster than light. Nope, I don't have a twin. Another question. Whats 40000000000000000 x 40000000000000000? Can you get it right without a calculator? :thumbsup: :happyclappy: :clap: :nod:

minecraft
Posts: 32
Joined: November 20th, 2013, 10:14 am

Re: Introductions...

#18 Post by minecraft » November 28th, 2013, 1:38 pm

getreal wrote:Hi Minecraft and DanRea!

:thumbsup:

Why did you choose your particular name, Minecraft?
Because I play Minecraft.

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Alan H
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Joined: July 3rd, 2007, 10:26 pm

Re: Introductions...

#19 Post by Alan H » November 28th, 2013, 2:10 pm

minecraft wrote:Another question. Whats 40000000000000000 x 40000000000000000? Can you get it right without a calculator? :thumbsup: :happyclappy: :clap: :nod:
40,000,000,000,000,000 x 40,000,000,000,000,000 = 4 x 10^16 x 4 x 10^16 = 16 x 10^32 = 1,600,000,000,000,000,000,000,000,000,000,000. Am I correct?

When I said 40,000,000,000,000,000 = 4 x 10^16, I'm using a common shorthand way of saying big numbers. This means 4 followed by sixteen zeros and you say it as "4 times ten to the power 16". Don't worry about that if you don't know that, but it makes the sum a lot easier to do!

Also, can you see that I put commas after every three zeros? That just makes it easier to count how many zeros there are - it's too easy to get lost trying to count how many there are in 40000000000000000!
Alan Henness

There are three fundamental questions for anyone advocating Brexit:

1. What, precisely, are the significant and tangible benefits of leaving the EU?
2. What damage to the UK and its citizens is an acceptable price to pay for those benefits?
3. Which ruling of the ECJ is most persuasive of the need to leave its jurisdiction?

minecraft
Posts: 32
Joined: November 20th, 2013, 10:14 am

Re: Introductions...

#20 Post by minecraft » November 28th, 2013, 2:50 pm

Alan H wrote:
minecraft wrote:Another question. Whats 40000000000000000 x 40000000000000000? Can you get it right without a calculator? :thumbsup: :happyclappy: :clap: :nod:
40,000,000,000,000,000 x 40,000,000,000,000,000 = 4 x 10^16 x 4 x 10^16 = 16 x 10^32 = 1,600,000,000,000,000,000,000,000,000,000,000. Am I correct?

When I said 40,000,000,000,000,000 = 4 x 10^16, I'm using a common shorthand way of saying big numbers. This means 4 followed by sixteen zeros and you say it as "4 times ten to the power 16". Don't worry about that if you don't know that, but it makes the sum a lot easier to do!

Also, can you see that I put commas after every three zeros? That just makes it easier to count how many zeros there are - it's too easy to get lost trying to count how many there are in 40000000000000000!
You are right! :happyclappy:

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