November is here, and that means a massive shift is coming. And by "massive" I am of course referring to the redefinition of the kilogram unit of mass that the world has been building up to for more than 100 years. Let me explain:

1/ I've had an unhealthy fascination with metrology (the study of measurement) ever since my 2nd year as a physics major when I took a class devoted to duplicating historic physics experiments, so please indulge me for going into heavy detail (get it?) about the kilogram.

2/ So what actually *defines* a unit of measurement? If you're American, you probably know a mile is 5280 feet and a foot is 12 inches and an inch is 2.54 centimeters etc. But where does this chain of definitions end? Is it turtles all the way down?

3/ It's actually not! For all units (even the imperial units used in America) the answers all end with the Système International (SI) unit definitions established and maintained for over 100 years by the Bureau International des Poids et Mesures (BIMP) in France.

4/ At the base of this tower are the SI base units. Just 7 SI base units define every other unit in existence. They are:

Kilogram, kg (mass)
Meter, m (distance)
Second, s (time)
Kelvin, K (temp)
Ampere, A (electric current)
Candela, cd (luminous intensity)
Mole, mol (quantity)

1) OBSERVATION: The frequencies are changing. I would have to assess stats on the electromagnetic field to see its fluctuations. All I know is, I am highly sensitive to energy/frequencies, and they are changing, because…

2) 2 Weeks ago, my dog was effected by it as well. He is hearing things that aren’t technically audible. I can tell by his body language and sounds. One week ago I began feeling a pressure in my head and ears. It wasn’t painful at all, but it was intense for a bit.

3) It reminded me of taking off in an airplane a bit. I felt like I was in a vacuum. It went on and off for a couple of days. I’ve picked up on frequencies and high pitched sounds (not audible to most) for 30 years, and today my right ear began to ring for longer than usual.

4) This is nothing unusual for me, with exception of the duration. This happens often with me. No, it’s not tinnitus. Only this time, when I spoke, there was reverb creating a high pitch in my ear from my voice. This lasted for about 30 minutes. It did not hurt, just annoying.

5) So yes, the frequencies are changing. What this means exactly, I am unsure of at the moment. Some will say electromagnetic fields, others will say ascension, and some will say pole shift. I honestly can’t say at this very moment.

Light travels at about 1 foot per nanosecond.

Hold your hand up 12 inches from your face: you’re seeing your hand as it was a nanosecond ago. Everything you look at is, to one degree or another, in the past. The farther away in space, the more ancient in time.

You can’t see the Sun as it is now, but you can see it as it was about 8 minutes ago. You can’t see Alpha Centauri now, but you can see it 4.4 years ago. You can see the Andromeda Galaxy as it was 2.5 million years in the past. And so on.

With powerful telescopes, we can see galaxies whose light has been traveling to us for more than 13 billion years. We see them shining in a universe that’s still young, where gravity has just begun to pull matter together into stars and galaxies.

We can see something even more distant, and more ancient, than the first galaxies. If we peer out far enough, in between the galaxies, we can see parts of the Universe that are so far away, it has taken the light from that distance almost the entire age of the cosmos to reach us.

JUST IN: The U.S. National Climate Assessment is now public.

This is the report that the Trump Administration doesn’t want you to see. Years in the making, released on the day after Thanksgiving. #ClimateFriday

Here are some of the main

This report is mandated by Congress and focused on the impacts of climate change in the U.S.

Basically: This is what our best scientists think will happen to us as a result of the actions our government is (not) taking to address the most important problem in human history.
/2

300 experts in 13 federal agencies volunteered their time to make sure you have this information.

Please share it widely.
/3

The top finding:

“Climate change is projected to significantly affect human health, the economy, and the environment in the United

To expand on that finding:

“In the absence of more significant global mitigation efforts, climate change is projected to impose substantial damages on the U.S. economy, human health, and the environment. ...”
/5

1/ Today is #BlackHoleFriday, an annual science outreach event that, by complete coincidence I’m sure, is done on #BlackFriday. You’ll read lots of cool stuff about black holes on the hashtag. Here’s mine.

2/ Black holes are weird. Duh. People like to think of them as something like incredibly dense nuggets of stuff that sucks other stuff in. But they’re not like that.

3/ If you squeeze enough mass into a small enough volume, the gravity gets so intense that it’s impossible to escape them *if you get too close*. From far away, though, gravitationally they more or less act like anything with that much mass.

4/ So if the Sun turns into a black hole we wouldn’t get drawn in. In fact, we’d orbit it almost exactly the same way as we do now, though we’d freeze to death pretty rapidly, which, in the end, would still kinda suck.

5/ Black holes get weird *when you get close*. Anything with mass warps space — we feel that warp as gravity! — but black holes stretch space to its limit.

So proud of my @UNGlobalPulse team and collaborators that step by step and over the years have managed to bring 🤖 science closer to humanitarian and development work. We now have a library!! 📚 📚📚 https://t.co/rOxXQRllo5 Some peer-reviewed highlights in this thread 👇

Some 1300 years ago in Karnataka there lived a genius who wrote "Gaṇitasārasan̄graha" (which is earliest text devoted entirely to mathematics)

The man who's work later borrowed by Arabs & Europeans

Thread on "Mahāvīracharya" astounding but forgotten legacy

Mahāvirachārya was patronised by rashtrakuta king amoghavarasha

His book"Gaṇita-sāra-saṅgraha"is earliest text devoted entirely to Mathematics

He has described the currently used method of calculating(LCM)of given numbers.The same method was used in Europe later in1500CE

Mahavira wrote "Gaṇita-sāra-saṅgraha" (GSS) in 8th century CE which contains some 1100 slokās & contains elementary topics in arithmetic , algebra , geometry , measurements , logic , number theory , dynamical systems etc

A sheer mathematical genius

He was devout jain
His magnum opus "Ganit sara sangraha " start with a sloka bowing to the glory of the jinas

"संख्याज्ञानप्रदिपेन जैनेंद्रन महत्वेशा,
प्रकाशितम जगतसर्व येन तम प्रणमाम्यहम"

He also praised his predecessor aryabhata , brahmagupta & other greats in his works

The importance & popularity of "Gaṇita-sāra-saṅgraha"was so huge that it enjoyed statues of most important textbook of mathematics in South Indian for over 3 centuries

A large no of manuscript copies of
"Gaṇita-sāra-saṅgraha"whr discovered in Kerala shows it's popularity

Let's talk about Avi Loeb and his theory about alien

First, I should disclose that I work at the fame research facility as Dr. Loeb, though I work in a different department and to my recollection we've never met.

He's a scientist; I'm in computer support.

With that out of the way...
The interview above is worth a read, and a lot of serious thought, because there's an idea there that's really critical to science, and it isn't whether or not aliens have visited (exactly).

It's about how fashion and culture and taboo have an unfortunately strong effect on science.

In particular he compares his theory on alien visitation with the multiverse theory.

Which of these is more deserving of ridicule?

Science is fundamentally a structure for forming hypotheses and then (critically) testing these hypotheses to see if they should be kept, rejected, or modified.

The Review: GW 23 - A thread

Hi everyone, welcome to the latest edition of “The Review” where me and @urboihamza look ahead to the upcoming double GWs and chip strategies in detail:

#FPL #FPLCommunity @OfficialFPL

(Data taken from @FFScout and @FFH_HQ with consent)

Before I start, an update on the Fantasy5: There have been no winners for two consecutive GWs now, so I feel the organizers have been more sympathetic in setting targets yet again this week. This might be your best chance to win £10k! Link below:

At this point, I’d also like to mention that I post about FPL on my Instagram too, so if you have an Instagram account, do follow up here:

I’d like to dedicate this Review of mine to my dear friend Dylan who is an avid FPL player and a regular reader of my pieces. He is battling a brutal illness so my thoughts are with him and his family during these tough times – stay strong lil bro and good luck!

Q: What is the optimum strategy for FPL managers wildcarding sometime soon who do not have their Free Hit in hand?

I’d like to credit to @BenCrellin for his outstanding work helping to shed more clarity on the double GWs coming up. Southampton winning against Wolves...

And since today is International Day of Women and Girls in Science, let's highlight a few of them - just a few women among thousands of others who helped shape the world we live in today.

Thread.

Dorothy Hodgkin discovered the structure of insulin after 36 years of work.

"I was captured for life by chemistry and by crystals."

Sophia Jex-Blake fought for women's rights to study medicine. She was involved in founding two medical schools for women.

"It seemed discreditable to Great Britain that all her daughters who desired a University education should be driven abroad to seek it."

Alice Augusta Ball developed the "Ball Method", the most effective treatment for leprosy during the early 20th century. She was 23.

Ada Lovelace is regarded as the first to recognize the full potential of computers and as one of the first computer programmers.

“That brain of mine is something more than merely mortal; as time will show.”

I think I've permanently confused KiCAD
it's reminding me that I need to connect this capacitor to Nothing

attach this end to ground, this end to +5v, and this end to THE VOID

I accidentally made all the capacitors gigantic and they won't fit anymore

halp

gonna design an ISA card using some of these

it's gonna be tricky to fit in the case

that's from this

Super excited to share my very first lead-author paper in @ScienceAdvances

Supported by @HIRN_CC @NIDDKgov @UFBME @UFWertheim @ufdiabetes @UMCoEDean
Lead by @Cherie_Stabler & @ashu83

link: https://t.co/FbqVWQ0n5p

This is a thread 👇

Highlights:
⚪️A Lab-on-a-Chip platform for organoids w/ wide capabilities: long-term culture | controlled & dynamic perifusion | in situ spatio-temporal imaging | serial cell assessment | ease of sample retrieval

⚪️Continuous fluidic flow increased local oxygen supply to islets in hydrogels & reduced cellular hypoxia
⚪️Flow increased cellular viability & reduced apoptosis & cell death

⚪️Human islets in hydrogels were highly functional during the 10 day in situ culture in our chips, while islet function was rapidly lost under static conditions
⚪️Glucolipotoxicity study showed a treatment window as small as 2.5 hours can elevate cell death

What are organoids? – A miniaturized version of an organ that imitate an aspect of human interface. They are commonly developed from stem cells in a lab. Human body also produces organoids naturally particularly within the pancreas.

THREAD
The world is littered with hacks and quick fixes.

Magic routines, butter in our coffee, special supplements, exotic foods. All promising to transform our lives.

Nearly all of it is BS. Here are 12 science-backed "hacks" that actually work.

Read a Book.

An expert in their field has taken their vast knowledge and distilled it to what's most important. Writing forces you to make difficult decisions on what's important and what's not. Writing demands clarity. You're getting an expert's lifetime of work for $15.

Talk to people who know more.

The best way to "hack" knowledge? Have a conversation with those who are informed. They've done the hard part of figuring out of sorting through the mess of information AND making sense of it. Having a conversation brings clarity for application.

Show up, no matter what.

Day after day. Sit down to write. Get out to exercise. Whatever the task you're trying to master, just keep showing up.

If you show up enough, you'll get better.

Sleep.

Just getting your 8+ hours has enormous benefits from the psychological to physical. Sleep is when your body restores & grows with its highest output of growth hormones, & when your mind processes and coalesces information. Translating knowledge from superficial to deep

Ct values can be used to estimate epidemic dynamics UPDATE! Ct values are expected to change depending on whether the epidemic is growing or declining, and we harness this to estimate the epidemic trajectory. Lots of cool new analyses and methods!

Highlights:
- Cts from symptom-based surveillance change over time, but the effect is weaker
- Methods to infer incidence using single cross-sections of Cts
- Unbiased by changing testing coverage
- Gaussian process (wiggly line) model for incidence tracking using Ct values
2/12

This work is *JOINTLY led* with @LeekShaffer and PI’d by @michaelmina_lab. Thank you also to the ever insightful @mlipsitch and to coauthors @SanjatKanjilal @gabriel_stacey and @nialljlennon. 3/12

Premise: times since infection depend on the epidemic trajectory. Distributions of randomly sampled viral loads proxy times since infection. With calibration, Ct values can estimate growth rate. We focus on qPCR in SARS-CoV-2, but the principle applies to any outbreak. 4/12

Result 1: viral loads are shifted higher (Cts lower) during epidemic growth and lower (Cts higher) during decline when individuals are sampled *based on the onset of symptoms*. We simulated linelist data under symptom-based surveillance and looked at TSI and Cts over time. 5/12