Physicist in a cancer clinic. I show what radiation, gravity, heat and vacuum do to a human body, in real numbers.
Joined September 2026
- Tweets339
- Following48
- Followers53
- Likes26
X-rays go through you. Protons stop inside you.
One beam each, same tumour: the X-rays give the heart 33% of the tumour dose, the protons about 1%.
Guess why most patients, mine included, still get X-rays.
5
132
Popular science says one neutrino hits you in your whole life.
Detector data says about one a week.
Borexino in Italy sees about 185 solar neutrino hits per 100 tonnes of liquid a day. Scale it to a 70 kg body.
Send this to the friend who loves space facts.
Every space movie gets this wrong.
No suit, deep space. How long until you freeze? Reply with your guess before you watch.
I'm a physicist in a cancer clinic, and I ran the heat math for a human body.
4
87
Every radiation dose, ranked from a banana to Chernobyl.
One of them kills you. Reply with your guess before you watch.
I'm a physicist in a cancer clinic. The biggest number on the list is the one our patients get.
2
66
70 Gy is ten times a lethal dose. Our cancer patients get it and walk out after every session.
I'm a physicist in a cancer clinic. Two tricks make it survivable, and the second one is pure math.
Guess how many cancer cells are left after 35 sessions.
1
118
7 Gy of radiation warms your body by just 0.002 °C. Most people who get it die within weeks.
Our cancer patients get 70 Gy, ten times more, and survive.
Can you guess how before Physics vs You #2?
1
102
in our system the gaps are huge. if the Sun vanished, Earth would find out after 8 min 17 s, Jupiter after 44 min and Voyager 1 after almost a full day
38
if the Sun vanished, Saturn and its moons would keep shining in our night sky for 2 h 20 min after our own daylight is gone. sunlight needs 78 min to reach them and 70 more to bounce back to us
64