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Wie hell kann es im All werden? (2019) - Duration: 8:25.
How bright can it actually be in the universe? This question is not so easy to answer
as it appears. The answers are indeed often cryptic - one hears from absolute
and relative magnitudes, from the visible part of the EM spectrum, terms often fall
like Supernova and Quasar. What that all means and how bright it really will be in the universe
can we light that in this video - me am Ronny, welcome to spacetime.
The prerequisite for light is first sometimes a light source. A candle for example.
As a rule, the light spreads spherical from the light source. Actually acts
Of course, light is electromagnetic Radiation whose spectrum differs from the extremely long-wave
Radio waves up to the ultra short wave Gamma rays last.
Our eyes are capable of a certain area to receive these waves. electromagnetic
Waves with wavelengths of 380 - 740 nm can perceive our eye - and as
Light. With a wavelength of 380 nanometers does the light shine red - become the
Waves even longer, they are in the Infrared part of the spectrum and become them
invisible to us. Many remote controls about to emit such infrared signals.
At the upper end of the visible spectrum, at 740 nanometers, we see purple light - be
the waves are even shorter, let's talk about Ultraviolet radiation.
But back to the visible part. The farther we are away from a light source the more
she seems to be weaker. A light bulb a few meters from me, for example, acts considerably
brighter than the same light bulb from one Distance of 100 meters. That is not about
because the energy of light decreases. Wavelength and energy remain the same. Why
then the apparent loss of brightness? The answer is pretty simple. Since that is
Light expands spherically, it has to be larger Distance illuminate an ever larger sphere.
This can be explained a bit better, though we explain that with photons. We take
let's say, a candle flame sends 1 million Photons off and stands one meter from me
away. Distributed this million photons evenly on a spherical surface
with 1 meter radius. Calculate this surface we squared 4 times Pi times R square. In order to
hit 1 million photons on about 12 square meters. If we now go one meter, then
the sphere surface increases considerably, namely to 4 times Pi times 2 squared, so
on about 50 square meters. The same 1 million Photons are now distributed to a 4 times
larger area. Therefore, the luminosity decreases a light source with the square of the distance
From - I double the distance, mine works Light source a quarter as bright as before.
That makes it a bit difficult, the luminosity to indicate of cosmic objects, if I
want to rely on my eyes. The 8 minutes away from the sun
to the brightest light sources we put on Earth, but it is less
bright as for example Sirius A, the 8 light years away from us. Therefore
distinguish astronomers between the apparent and the absolute brightness of objects
in the universe, whose unity is the magnitude is - in shorthand mag.
To make things really complicated, a smaller value means a larger one
Brightness is also the scale on which the Brightness is indicated, logarithmic.
An object that has 5 magnitudes under one is another, is 100 times as bright. Class.
Let's look at an example - and Let's stay with the apparent
Brightness. The planet Venus - the third brightest Object in the night sky, has an apparent
Brightness of - 4.7 mag. The full moon - considerably brighter than Venus - put it on - 12,7
like. A difference of 8 magnitudes. In order to the full moon is 1600 times as bright as the
Venus - apparently. What about the sun? The sun, which we do not want to look at directly,
has an apparent brightness of -26.7. Fourteen magnitudes under the moon, 22 magnitudes
under the Venus. So the sun is 400,000 Time as bright as the moon and 630 million
Time as bright as Venus. The apparent magnitude is in astronomy
not very helpful. To objects with each other so you can compare
the absolute brightness back. And this defined as the brightness of an object
from a distance of 10 parsec or 32.6 Light years.
Now the sun gets better with it compare to other stars. The sun has
an absolute brightness of about 4.8 mag. It would be good for observers
Eyes from 33 light years still visible. Sirius, the brightest star in the night sky
an absolute brightness of 1.5 and is with it almost 20 times brighter than the sun.
How bright are the brightest stars that we know? The red giant Betelgeuse in the constellation
Orion is one of them - its absolute brightness is lush -8. The hypergigant VY
Canis Majoris already makes it to -9.4 Mag. But the brightest stars are natural
Wolf-Rayet stars and the current record the brightest star is the Wolf Rayet Stern
R135-a1 in the large Magellanic cloud with impressive -12.5 mag of absolute brightness.
He is under more than 17 magnitudes the sun and so emits nearly 9 million
Sometimes brighter than her. That's it? Of course not. There is still a lot going on
brighter. Galaxies, for example, combine luminosity their stars. Even if I of course
can not watch from 10 parsec, so can I still calculate their absolute luminosity.
The black eye galaxy for example, the we can not see with the naked eye
has an absolute luminosity of -21.7, which with our home galaxy, the Milky Way
is comparable. And even galaxies do not provide the maximum
the brightness. Far from it. Supervovae regularly outshine the galaxies, in
which they arise. We were only in 2015 Witnesses a hypernova, under the name
ASASSN-15lh became known. This event reached an absolute brightness of -23.5
like. That's 570 billion times brighter than the sun and unbelievable 50 times brighter than
the light of all stars of the Milky Way together. And that is not enough. The undisputed
namely the brightest objects of the cosmos active galactic nuclei, of which especially
the quasars are a concept to many. Supermassive black holes in the center of a galaxy
can be so bright that they are in the telescope like a star - they are quasi-stellar,
like stars. This seems paradoxical at first - black holes are finally that
ultimate dark. But swallow them actively Material, such as gas clouds or stars,
then they accelerate this material up to 50% of the speed of light. It is
this rubbing material, which produces the glistening light of quasars.
The hitherto brightest quasar and thus the brightest known object of the universe
is 3C 454.3 with a brightness of -31.7 Mag - 10,000 times brighter than the light of all
Stars of our galaxy. Would this quasar 33 light years away from us, he would be on
Heaven seem 100 times brighter than ours Sun. We would all be dead, too.
I deliberately renounce that in January Quasar J043947.08 - the full
We show the name here. J043947.08 + 163415.7 This quasar would actually be far from it
brightest, but still needs clarification are, to what extent gravitational lens effects
falsify the measured brightness. Exciting, of course, as Michael already
on Vsauce said that the brightest light of the Universe originated in the darkness of the black
Has holes - this fact fits but, I think, seamlessly into the sublime
Beauty of the cosmos. If you also make this video a little enlightening
found, we are pleased about your subscription and a Like. We also greet as always
our galactic overlords Rico Wittke, Tobias Sternberg and Dimitar Jauch. As always
say thank you for watching and - in this sense - 42!
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Are House Churches Biblical? | Ask Jennifer LeClaire - Duration: 1:28.
our house church is biblical absolutely they're absolutely biblical if you read
the book of Acts the first Christians met in homes there were no established
churches with steeples there were synagogues but the church the early
church many times they were persecuted so they had to meet in homes kind of
like the church in China today so many of them meet in homes but we see in
Scripture over and over in the book of Acts the
concept of house churches we see Paul writing letters saying say hello to the
ones who meet in so-and-so's house for church and so we understand a straight
from the Bible we can look at the early church and the book of Acts and know
that this was actually the genesis of the way church was birthed it was
birthed and conducted in homes not in big buildings only when Constantine came
on the scene that we begin to see big buildings erected where people were
gathering to a building for a larger service instead of to a home for a more
intimate service so yes through the New Testament
I'm sorry through the book of Acts you will see a mention in reference to house
churches this was the way of the early church and many people now are coming
back to it again it's coming around full circle
you
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Magnastorm Final Thoughts - Duration: 9:10.
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5 Things You Didn't Know About Delcatty - Duration: 2:19.
- [JAMES] In the National Pokédex
Pokémon #301 is Delcatty,
"The Prim Pokémon."
This pure normal-type Pokémon was introduced in Pokémon Ruby and Sapphire Versions
and evolves from the really cute Pokémon Skitty
when exposed to a Moon Stone.
You may actually know all of that, as that's pretty easy to get info,
but what you might not know
are the 5 facts we're about to go over.
#1:
Delcatty's English name is purely just a combination of the words "delicate" and, well, "cat".
However, in Japan its name is (incomprehensible gibberish)...
or..eno...enokorororo...
I can't pronounce it but it's that.
And this is derived from the name of a variety of foxtail grass,
the word "neko" which means cat,
and "kokoro" which means heart.
Aw, that's kind of sweet.
I don't see where grass comes from, though.
#2:
According to Pokédex data,
Delcatty tend to be wandering Pokémon who lead a rather laid back existence.
According to the Pokédex from Pokémon Omega Ruby:
"Delcatty prefers to live an unfettered existence
in which it can do as it pleases at its own pace.
Because of this,
this Pokémon eats and sleeps whenever it decides,
and its daily routines are completely random."
#3:
Despite the information in fact #2,
Delcatty also seem to be obsessed with cleanliness,
with the Pokémon HeartGold Version Pokédex stating:
"It dislikes dirty places.
It often searches for a comfy place in which to groom itself."
#4:
The fur around Delcatty's neck was intentionally designed to look like a neck pillow,
much like those typically used by travellers.
Perhaps this was done to reflect how Delcatty wanders around and
eats and sleeps wherever it chooses.
As was stated in the previous fact.
And #5:
Much like its pre-evolution, Skitty,
Delcatty does not have equal chances of being found in the wild as Male and Female,
and instead Delcatty is 75% likely to be found as a female.
It is only 25% likely to be found as a male.
Despite this, there are no major physical differences
between male and female Delcatty.
And that's it for our video on Delcatty!
What Pokémon topics do you want to see covered in future videos?
Let me know in the comment section below
and while you're at it, why don't you subscribe to Master Trainer
to keep updated on everything and anything Pokémon.
And with that, I'll see you next time.
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Magnastorm Extended Gameplay - Duration: 24:14.
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Steve Rogers Transformation Scene | Captain America The First Avenger (2011) Movie Clip - Duration: 4:20.
Do you hear me? Is this on?
Ladies and gentlemen,
today we take not another step towards annihilation,
but the first step
on the path to peace.
We begin with a series of microinjections into
the subject's major muscle groups. The serum infusion
will cause immediate cellular change.
And then, to stimulate growth,
the subject will be saturated with Vita-Rays.
That wasn't so bad.
That was penicillin.
Serum infusion beginning in
five,
four,
three,
two,
one.
Now, Mr. Stark.
Steven? Can you hear me?
It's probably too late to go to the bathroom, right?
We will proceed.
That's 10%.
Twenty percent.
Thirty.
That's 40%.
Vital signs are normal.
That's 50%.
Sixty.
Seventy.
Steven!
- Steven! - Shut it down!
Shut it down!
Kill the reactor, Mr. Stark!
Turn it off! Kill it! Kill the reactor!
No!
Don't! I can do this!
Eighty.
Ninety.
That's 100%.
Mr. Stark?
Steven. Steven.
The son of a bitch did it.
- I did it. - Yeah, yeah.
I think we did it.
You actually did it.
How do you feel?
Taller.
You look taller.
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Do a vlog – My First Attempt (VLOGGERS) - Duration: 6:31.
In 2018 YouTube was cumulating 1.5 billion monthly views or 400 hours of
video uploaded every single minute you are probably asking yourself but what
are people talking about what are all these videos about and you will probably
be surprised when I will tell you that at the top of the list next to the
tutorials music videos and other technology reviews one of the most
watched type of videos or vlogs so what is a vlog vlog is the contraction of the
words video and blog see prior to the existence of YouTube one of the trends at
the time was to write your adventure on a blog an Internet and public diary
quickly media and marketing companies understood the opportunity that the
so-called bloggers were offering the first Internet influences were born
offering the perfect distribution channel for companies wanted to target
their sales and marketing efforts in 2005 YouTube arrived and profiles like lonely
girl15 or Shay Carl took the blog to a new level and started filming themselves
the vlog was born and it became a huge success in 2018 44 percent of all the
Internet users watch at least one vlog per month and although the 16-24 years
old represent 53% of the vlog audience the 25-34s are not too far behind
and with 35-55 age group being the fastest growing demographics on
platforms like YouTube it is only a matter of time before your grandmother
starts watching vloggers today amongst the most famous vloggers you will find
people like Casey Neistat Jake Paul and he's infamous brother Logan Paul Lizzie Koshy
Zoella or the up-trending Peter McKinnon so why blog are so important today when
creating videos on YouTube and this whatever the message your channel is
trying to give vlogs help to build up the audience showing that you are just
another normal human being with your thoughts and clumsiness
so for youtubers trying to accumulate subscribers vlogging
is a crucial part of the job and with competitors to YouTube like Facebook
Instagram Snapchat also deciding to step up and now offering live features and
other short stories videos the vlog format will only be growing so without further ado
here is my first attempt at this tough exercise putting myself out of my comfort zone
so first vlog huh don't know what to say don't know what to do
I told you I would take you with me on every first times
well every first times there are a lot of first times that already happened right
When it comes to YouTube and social media this whole universe is brand new for me
So first vlog and what is going to happen in this vlog
I don't know you tell me we're going to see my sister in Lyon and spent a bit
of time with her I would have never thought it would be vlogging one day who
would have thought that especially not me cool so driving and
vlogging at the same time when I'm by myself is actually pretty hard so I'm gonna put
the camera down and I'll take you once I am in Lyon PEACE
Boo just arrived at my sister's she's not here actually first time I see her flat
the only thing you're gonna see is probally just that behind me so today
just a little catch-up with my sister and her husband I'll see you tomorrow for
some hopefully adventures in Lyon so one good thing about France markets
So now that the market is over we are at the place Bellecour in the center of Lyon
with is my sister she doesn't want to be seen she was here and yeah we're
gonna go and have a walk and bit of time together in central Lyon
okay enough of this stupid vlog you've got it I'm not necessarily the best at
vlogging if I want to share my experiences with you going forward this
is definitely something I want to get better at the reason I wanted to show
you this video is just to encourage you in going out of your comfort zone even
though you feel ridiculous sometimes you shouldn't be afraid of trying and
practicing and trying again because this is how you get better in life this is
how you master anything you want to do so go out there put yourself out of your
comfort zone be ridiculous be crazy and try again and again and again until you
master it because no one can remove the knowledge you will get from these
experiences you have to do it every time you are afraid of doing something you
should do it and you should learn from it so thanks to all of you who are still
there watching this video subscribe click on the notification Bell comment
and like go on my Instagram and as usual I will see you next week
double ciao and a bye bye bye
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Magnastorm Gameplay Runthrough - Duration: 23:30.
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One Week of FREE German Lessons with Lingoda 🗣👩🏼💻 - Duration: 5:19.
Hello everyone!
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Bye!
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