Discover and read the best of Twitter Threads about #gravitationalwaves

Most recents (11)

What are gravitational waves?
#Einstein predicted in 1916.
It took almost a century to realize that.
He was "way ahead of his time".
When a gravitational wave passes through objects will elongate and shrink alternatively.

#Gravity #GravitationalWave 1/n

But #GravitationalWaves are tiny so does the elongation and shrinking.

So scientists build an "L" shaped tunnel and sending laser from the middle point to both the edges and back continuously.

The length of the L shaped tunnel is 2.5 miles each side.

#gravity 2/n
The idea is when #gravitationalwaves pass through the L shape tunnel, one side will shrink and the other side will elongate bcoz they are diagonally opposite to each other.

The instrument is so sensitive that it can measure a change in length as small as 1/1000 of a proton. 3/n
Read 6 tweets
Daily Bookmarks to GAVNet 03/09/2022…
Origins, evolution and future of global development cooperation - Devpolicy Blog from the Development Policy Centre…
#GlobalDevelopment, #GlobalCooperation, #DevelopmentPolicy
Coronapod: why stopping COVID testing would be a mistake…
#COVIDTesting, #DataAccuracy, #PandemicResponse
Read 13 tweets
This week FC1 (Filter Cavity [mirror] #1) was installed in the @LIGOWA's new HAM7 vacuum chamber for the new @LIGO A+ Filter Cavity.
FC1 is a triple suspension mirror. This work was also installed in @LIGOWA's NEW "Mega Cleanroom"!
#GravitationalWaves #LIGO @NSF #NSF
Here the HAM7 #vacuum chamber is partially opened up. The FC1 suspension is shyly hiding inside it's protective cover as TJ (Lead Operator), Travis Sadecki (Operations Specialist), & Rahul Kumar (Suspension [SUS] Detector Engineer) prepare for installation.
FC1 Uncovered!
This @LIGO Triple Suspension currently has a "dummy weight" suspended at the bottom, this "dummy" will be replaced with its mirror next! TJ is in this photo.
Read 10 tweets
The detection of #GravitationalWaves features in many lists of the most important scientific breakthroughs of the decade. Here's the @SmithsonianMag list...…
..."From gene-editing to gravitational waves" were on the @nature list...
Read 8 tweets
Besides #GravitationalWaves from pairs of black holes & neutron stars, @LIGO and @ego_virgo could detect the combined rumble of the many sources that are too far away (hence too faint) for us to distinguish individually. We call this a “stochastic background” (1/N)
This stochastic background of gravitational waves is almost like the pitter-patter of rain on a tin roof, or the drumming of popcorn: many individual short sounds adding up to a noisy whole (2/N)
As a more scientific analogy, this is also similar to the cosmic microwave background (CMB): noisy radiation produced in the early universe that reaches from all directions. Except instead of light, the stochastic background we look for is made of gravitational waves! (3/N)
Read 10 tweets
THREAD - How about a bunch of blog posts on #Space and #Astronomy? Yes, I have more than you can imagine - especially since these are really just #physics topics. Hold on - because this is going to be a bit large.
2/ Here is an answer to my fav astronomy question EVER - "What would the phases of the moon look like if the moon was a cube?"…
3/ The great thing about the cube moon question is that it really tests if students understand phases of the moon rather than just recalling factual stuff. Here is my python model of a cube and spherical moon
Read 70 tweets
When #Muslims say scientific knowledge in #Qur’an proves its Divine origin, #atheists laugh. Share this #thread with them 👇 they’ll quickly stop laughing! 😆/1
So let’s begin at the beginning shall we? The #BigBang, for starters /2
Scientists like Fred Hoyle themselves could hardly believe that all matter along with all laws emerged from nothing…/3
Read 33 tweets
One cool bit of science you can learn from the #GravitationalWaves from neutron stars is about the "equation of state" of nuclear matter 1/?
this is something that simply can't be measured directly in labs or colliders on Earth. Astronomy is the only direct way to measure it. 2/?
How fast the inspiral happens encodes how "squishy" are the neutron stars. This is called the tidal deformability. 3/?
Read 5 tweets
So I left #postdoc, and I left #adjunct and went into #industry. There are two things I wish I knew when making this transition, and I hope it may help you...
...I didn’t know what buzzwords to put on my resume to make it reflect, in #industry terms, my skills. For #STEM academics, I’ve learned that a lot of what we do includes systems engineering, and project management... this may be obvious to some of you, esp the E part of #stem, but I didn’t know this. I recommend looking up buzzwords for sys eng and project management...
Read 12 tweets

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