Could a 100 trillion yottawatt pulse cannon destroy a milky-way sized galaxy ?

[ian]

It's just something I wanted to build.

[Poliwhirl]

lol

[username12121]

It'd be worth it to find out.

[The Wolf of Calabarzon]

The luminosity of the Milky Way is about 40 trillion yottawatts, so 2.5 times that sounds more like the galactic equivalent of a sunburn to me.

[eram]

Start with something a lot smaller and see if it scales.

Try burning a matchstick with a magnifying glass then go bigger.

[ian]

The Wolf of Calabarzon původně napsal:

The luminosity of the Milky Way is about 40 trillion yottawatts, so 2.5 times that sounds more like the galactic equivalent of a sunburn to me.

I was thinking the cannon could be fired at the centre of the galaxy and the shockwave would destroy everything

[The Wolf of Calabarzon]

ian původně napsal:

The Wolf of Calabarzon původně napsal:

The luminosity of the Milky Way is about 40 trillion yottawatts, so 2.5 times that sounds more like the galactic equivalent of a sunburn to me.

I was thinking the cannon could be fired at the centre of the galaxy and the shockwave would destroy everything

However it is done, you would need to exceed the gravitational binding energy of the Milky Way. Given that you need about 2×10^32 joules of energy to exceed the GBE of the Earth (1 joule = 1 watt for 1 second), I'm thinking the GBE of the entire Milky Way would be many orders of magnitude greater than 100 trillion yottawatts (10^34 W).

EDIT: The GBE of the Milky Way is approximately 10^61 ergs or 10^54 joules according to this arXiv paper[arxiv.org]. This means your 100 trillion yottawatt destroy-o-tron would need to run constantly for about three trillion years.

Then again, I know next to nothing about physics, so I might be wronger than wrong. EDIT: Actually, I'll be surprised if I'm anywhere even approximately correct.

[ian]

The Wolf of Calabarzon původně napsal:

ian původně napsal:

I was thinking the cannon could be fired at the centre of the galaxy and the shockwave would destroy everything

However it is done, you would need to exceed the gravitational binding energy of the Milky Way. Given that you need about 2×10^32 joules of energy to exceed the GBE of the Earth (1 joule = 1 watt for 1 second), I'm thinking the GBE of the entire Milky Way would be many orders of magnitude greater than 100 trillion yottawatts (10^34 W).

Then again, I know next to nothing about physics, so I might be wronger than wrong.

So what would this cannon of mine do ?

[The Wolf of Calabarzon]

ian původně napsal:

The Wolf of Calabarzon původně napsal:

However it is done, you would need to exceed the gravitational binding energy of the Milky Way. Given that you need about 2×10^32 joules of energy to exceed the GBE of the Earth (1 joule = 1 watt for 1 second), I'm thinking the GBE of the entire Milky Way would be many orders of magnitude greater than 100 trillion yottawatts (10^34 W).

Then again, I know next to nothing about physics, so I might be wronger than wrong.

So what would this cannon of mine do ?

If my maths are correct (big "if" there), it would destroy the Milky Way, but it would take about three trillion years to do so. Might want to up the power level a few orders of magnitude.

[Icedwhisper]

Instead of doing something so ♥♥♥♥♥♥♥♥ stupid, just make a sound that is 1,100DB loud. A sound such loud would create a black hole so big, that it would gobble up our entire galaxy within a second. The loudest sound so far is 300-315 Db. Source:
https://www.youtube.com/watch?v=8VGDhGsYoSA

[The Wolf of Calabarzon]

Icedwhisper původně napsal:

Instead of doing something so [deleted] stupid...

What's stupid about this? Just think of the practical applications such a technology would have!

[Icedwhisper]

Oh, and here is another link which might be helpful:
http://www.everydaysciencestuff.com/destroy-universe-part-1/

[Icedwhisper]

The Wolf of Calabarzon původně napsal:

Icedwhisper původně napsal:

Instead of doing something so [deleted] stupid...

What's stupid about this? Just think of the practical uses such a technology would have! :smilekit:

The unit he was using is very complex (at least for an average user) and no one is really familiar with what is too much and what is not. It would require a lot of power and a lot of long number uses. But I can understand why you wouldn't think his idea is stupid, I mean you could use it in your books/stories, right?

[The Wolf of Calabarzon]

Icedwhisper původně napsal:

The unit he was using is very complex (at least for an average user) and no one is really familiar with what is too much and what is not. It would require a lot of power and a lot of long number uses. But I can understand why you wouldn't think his idea is stupid, I mean you could use it in your books/stories, right?

True.

[ostar]

Icedwhisper původně napsal:

Instead of doing something so ♥♥♥♥♥♥♥♥ stupid, just make a sound that is 1,100DB loud. A sound such loud would create a black hole so big, that it would gobble up our entire galaxy within a second.

Ahh, reddit-science. Totally believable.

[Icedwhisper]

ostar původně napsal:

Ahh, reddit-science. Totally believable.

i also gave a youtube video link and a link to another website. this is possible since 1100 db is louder than the sound of a supernova and stuff too geeky to tell here