urubu

This is the entry for 'poika' in a Finnish etymological dictionary (Nykysuomen etymologinen sanakirja), run through deepl:

"The word has definite etymological equivalents in both closely related and distantly related languages, e.g. Karelian and Votic poika, Ludic and Vepsian poig}, Estonian poeg, Livonian puoga, Komi and Udmurt pi, Mansi pig, and Hungarian fiu. Possible equivalents are also the initial parts of the Mordvin word pijo 'grandchild' and the Mari word puerge 'male person' (erge 'man'). The original form of the word has been reconstructed as *pojka. The Swedish pojke, which in the past also meant 'servant boy', is apparently a loanword from Finnish. In contrast, the English boy and the etymologically related German Bube have different origins."

For comparison: Spanish has around 4000 words of Arabic origin.

I don't think anyone ever called Spanish almost Semitic.

There is a technical linguistic term for it - th fronting:

en.wikipedia.org/wiki/Th-fronting

Apparently it's been around for quite a bit of time.

Likewise here in Germany. 0.79 €/500 g for the own brand in just about every supermarket (it used to be 0.49 € before inflation hit).

There is an effect called dispersion, which causes different frequencies of electromagnetic radiation to travel through a medium at different speeds (lower frequencies => slower).

It's strong enough to be noticeable in the case of pulsars (but probably insignificant inside the solar system).

The Finnish course is especially bad in this regard. You learn the words for 'lynx' (ilves) and 'wolverine' (ahma), but not for 'left' and 'right'.

Standing calf raises train the gastrocnemius and the soleus. Many gyms also have a seated calf raise machine which is meant to isolate the soleus.

I don't think I ever felt anything special after using it.

Not to be pedantic, but I think 'laying' has a different etymology, namely this one (quote from the OED):

'lay, v.1 General sense: To cause to lie.

[OE. lęcgan = OFris. ledsa, lega, leia, OS. leggian (Du. leggen), OHG. lecken, legen (MHG., mod.G. legen), ON. legja (Sw. lägga, Da. lægge), Goth. (= OTeut.) lagjan, f. lag- ablaut-variant of OTeut. leg-: see lie v.'

OE = Old English, OFris.= Old Frisian etc.