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 ⬅️   My Winter Imperatives 2025-24  ➡️  

Productivity Imperatives


Causes Of Death & crude rate per 1000 USA 2023 (provisional) Population 333,287,557

  1. Diseases of the heart 2.0 (Heart attacks, Congenital heart disease, …)
  2. Malignant neoplasms or tumors 1.8 (lung/breast, prostate, colorectal, pancreas, liver, stomach, …)
  3. Accidents (unintentional injuries) .67 (motor vehicle accidents, poisoning, falls, …)
  4. Cerebrovascular diseases .49 (Strokes (TIA), Brain aneurysms, …)
  5. Chronic lower respiratory diseases .44 (COPD: chronic bronchitis, emphysema, asthma, …)
  6. Alzheimer disease .34
  7. Diabetes mellitus .29
  8. Nephritis, nephrotic syndrome and nephrosis .17 (the kidneys become inflamed)
  9. Chronic liver disease and cirrhosis .16
  10. COVID-19 .15
  11. Intentional self-harm (suicide) .15 (firearms >50%, suffocation 26%, poisoning 12%)
  12. Influenza and pneumonia .14
  13. Essential hypertension and hypertensive renal (kidney) disease .13
  14. Septicemia .12 (an infection that occurs when bacteria, viruses, or fungi enter the bloodstream)
  15. Parkinson disease .12

    from: the CDC https://wonder.cdc.gov/controller/datarequest/D176;jsessionid=707C92B4C8121D6F818C45682212

NATO phonetic alphabet


Useful Mnemonics

  1. Radio Waves: Approximate Center Frequency: 1 MHz (This is a very rough estimate, as radio waves span a huge range) Example: AM radio broadcasts (around 530 kHz to 1710 kHz)
  2. Microwaves: Approximate Center Frequency: 10 GHz Example: Microwave ovens (typically use 2.45 GHz)
  3. Infrared: Approximate Center Frequency: 10 THz Example: Thermal imaging cameras (detect heat radiation in the infrared range)
  4. Visible Light: Approximate Center Frequency: 500 THz (corresponds to green light) Example: The light from a light bulb or the sun
  5. Ultraviolet: Approximate Center Frequency: 1 PHz Example: Black lights (emit UV light that makes certain materials glow)
  6. X-rays: Approximate Center Frequency: 100 PHz Example: X-ray machines used in hospitals for medical imaging
  7. Gamma Rays: Approximate Center Frequency: 1 EHz (and beyond) Example: Gamma rays emitted by radioactive materials or in nuclear reactions Important Notes: These are just rough estimates. The electromagnetic spectrum is a continuous range, and the boundaries between segments are not sharp. The frequencies given are just examples. Each segment has a wide range of frequencies and many different applications. The higher the frequency, the higher the energy of the electromagnetic radiation. Gamma rays have the highest energy, while radio waves have the lowest. I hope this helps! ]]

I Keep Six Honest Serving Men

(The Elephant’s Child)
I keep six honest serving-men
(They taught me all I knew);
Their names are What and Why and When
And How and Where and Who.
I send them over land and sea,
I send them east and west;
But after they have worked for me,
I give them all a rest.

I let them rest from nine till five,
For I am busy then,
As well as breakfast, lunch, and tea,
For they are hungry men.
But different folk have different views;
I know a person small—
She keeps ten million serving-men,
Who get no rest at all!

She sends ’em abroad on her own affairs,
From the second she opens her eyes—
One million Hows, two million Wheres,
And seven million Whys!


from: Rudyard Kipling



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