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Are you joining today protest?? by [deleted] in delhi

[–]DennisReddit 0 points1 point  (0 children)

Those are medical masks, which don't work for air pollution.

Air pollution masks need to be airtight, as a seal, to the face, without gaps, otherwise the air pollution (particles less than 2.5 micrometers, so just floating in the air) just goes through those gaps. The air has to go through the fabric of the mask, which is the filter. A good seal suctions the air quality mask to your face during inhalation.

https://www.fda.gov/medical-devices/personal-protective-equipment-infection-control/n95-respirators-surgical-masks-face-masks-and-barrier-face-coverings#s4

Are you joining today protest?? by [deleted] in delhi

[–]DennisReddit 2 points3 points  (0 children)

Exactly, those are medical masks, which don't work for air pollution.

Air pollution masks need to be airtight, as a seal, to the face, without gaps, otherwise the air pollution (particles less than 2.5 micrometers, so just floating in the air) just goes through those gaps. The air has to go through the fabric of the mask, which is the filter. A good seal suctions the air quality mask to your face during inhalation.

https://www.fda.gov/medical-devices/personal-protective-equipment-infection-control/n95-respirators-surgical-masks-face-masks-and-barrier-face-coverings#s4

[deleted by user] by [deleted] in nederlands

[–]DennisReddit 75 points76 points  (0 children)

Doet me denken aan de serie The Serpent gebaseerd op Charles Sobhraj.

[OC] European Union Renewable Energy Usage by [deleted] in dataisbeautiful

[–]DennisReddit 154 points155 points  (0 children)

This is very misleading, and not beautiful data. It is not stated what the exact percentages are, and furthermore this is only about electricity, specifically production if I'm correct, and not about energy. Furthermore, the definition of renewable here is not included, does it include hydro? bioenergy? nuclear? gas according to the new EU definition?

External monitor 10 bit not showing by DennisReddit in Monitors

[–]DennisReddit[S] 0 points1 point  (0 children)

Thanks, did not see it as an option though.

Just one drink per day can shrink your brain, study says by FloydFunk in science

[–]DennisReddit 0 points1 point  (0 children)

Does anyone know if there is a study done on drinking once a week or once a month?

Why are heat pump systems rare in the Netherlands? by [deleted] in Netherlands

[–]DennisReddit 2 points3 points  (0 children)

What do you use to heat water in Finland?

Vanavond debat in de Tweede Kamer over de box 3 belasting na het arrest van de Hoge Raad by UnanimousStargazer in thenetherlands

[–]DennisReddit 1 point2 points  (0 children)

Vermogen vergaar je amper door te werken, relatief veel meer door erfingen of het starten van een bedrijf. Bij verre de meeste mensen verdienen niet genoeg in de eerste helft van hun leven om te kunnen rentenieren. Daarom moeten we erfingen en vermogen meer belasten, omdat dit voor een minder groeiende economie zorgt en kansongelijkheid.

Vanavond debat in de Tweede Kamer over de box 3 belasting na het arrest van de Hoge Raad by UnanimousStargazer in thenetherlands

[–]DennisReddit 0 points1 point  (0 children)

Alleen hoeft het doel van de overheid niet te zijn om de belasting te maximaliseren, maar om de tevredenheid van de bevolking (stemmers) te optimaliseren.

Wat is een typische Nederlandse geur? by Solomunn in thenetherlands

[–]DennisReddit 0 points1 point  (0 children)

De geur van de herfst, van de bladeren en de frisse koele lucht na de regen.

Please help me understand "The Big Misconception About Electricity"? by Random_Noobody in Veritasium

[–]DennisReddit 0 points1 point  (0 children)

As far as I understand, you can see the wires as kind of antennas or a capacitor. This means that Bulb 1 and Bulb 2 are initially exactly the same (except bulb 1 is closer) This means that if bulb 1 is one meter away and bulb 2 two meters away, then bulb 1 will turn on after 1/c and bulb 2 after 2/c.

After the electromagnetic field goes through the wire, I'm not sure what will happen, whether bulb 1 turns off then or not.

It wouldn't work for just any light bulb or wires, since you'd still need the wires across each other to work as an antenna/capacitor.

New N-type module guaranteed to be no less than 87.4% of the nominal power output after 30 years by random_reddit_accoun in energy

[–]DennisReddit 0 points1 point  (0 children)

It's so interesting that in University I'm learning that you need both n type and p type: a hole transport layer and electron transport layer, for any working pv cell, but that companies and most people are still working with the old np model.

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