US Rail Tank Car videos

 1. Rail Tank Car 101

 

2. eRAIL COMMERCE Tank Car 101 Training Video

 

3. Modern Day Rail Tank Car Safety

 

4.Tank Car Loading and Unloading

 

Various videos for the DOT111 and related US specification rail tank cars (tank wagons)

5. Rail car loading rack fire (firefighting training)

 

Δυο νέα βιβλία!

Στην σημερινή μου επίσκεψη στην έκθεση IPMS Hellas 2022 είχα την ευκαιρία να προμηθευτώ δυο ιστορικά βιβλία εκδόσεως 2021

 

"Υπόγειες Ναυτικές Οχυρώσεις στην Αττική (1936-1944)" του Κωνσταντίνου Κυρίμη, έκδοση Ελληνικού Ινστιτούτου Ναυτικής Ιστορίας, 2021 (χαρτόδετο, 216 σελίδες). Μια URBEX εξερεύνηση και καταγραφή των ναυτικών οχυρώσεων στην Αίγινα, Φλέβες, Ναύσταθμο Σαλαμίνος, Σ.Ν.Δ. και Υπουργείο Ναυτικών. Περιλαμβάνονται βασικές πληροφορίες για τα έργα και αναλυτική αποτύπωση των υπογείων εγκαταστάσεων.

"Οι Διαβιβάσεις στο Έπος του '40", του φίλου Χρήστου Νοταρίδη, SV0FY, Ταξιάρχου (ΔΒ) ε.α., εκδόσεις Ινφογνώμων, 2021 (χαρτόδετο, 391 σελίδες). Πολύ αναλυτική και αξιόλογη προσπάθεια για την ιστορία των Διαβιβάσεων του Ελληνικού Στρατού σαν τμήμα του όπλου του Μηχανικού, η οποία σπανίως, και μόνο αποσπασματικά, καταγράφεται στις ελληνικές ιστορικές πηγές.

Greece: World Postcard Day stamps

 

 

On October 6, 2022, Hellenic Post (ELTA) issued a set of four stamps for the World Postcard Day, October 1st, 2022 in both regular and self-adhesive forms.  Although related, the stamps don't bear the Postocrossing logo. Each stamp bears no face value but is rated for "PostCards Worldwide" and its current price is €1.00 at the post offices. The stamps will be on sale until October 5, 2024.

 

Postcrossing

 

Last week I decided to have a go with Postcrossing. It is an interesting project of exchaging postcards with some Internet support.

Of course I am an old timer in radio QSL cards, but this project is much different. The cost is not trivial, as sending a single card from Greece currently costs about €1.30 - €2: €1 for ELTA postage and €0.30 to €1 for the card itself.

As I am a rookie, I make mistakes related to the rules and the etiquette of the project, but I am learning fast. 

Wikipedia article: https://en.wikipedia.org/wiki/Postcrossing

 

 

According to Wikipedia, we are part the peak of postcrossing excanges, but activity is still quite strong.

 

 

Heaven & Hell Thermodynamics

The temperature of Heaven can be rather accurately computed.  
Our authority is Isaiah 30:26, "Moreover, the light of the Moon 
shall be as the light of the Sun and the light of the Sun shall 
be sevenfold, as the light of seven days."  Thus Heaven receives 
from the Moon as much radiation as we do from the Sun, and in 
addition 7*7 (49) times as much as the Earth does from the Sun, 
or 50 times in all.  The light we receive from the Moon is one 
1/10,000 of the light we receive from the Sun, so we can ignore 
that... The radiation falling on Heaven will heat it to the 
point where the heat lost by radiation is just equal to the heat
received by radiation, i.e., Heaven loses 50 times as much heat
as the Earth by radiation.  Using the Stefan-Boltzmann law for
radiation, (H/E)^4 = 50, where E is the absolute temperature
of the earth (-300K), gives H as 798K (525°C).

The exact temperature of Hell cannot be computed... [However]
Revelations 21:8 says "But the fearful, and unbelieving... 
shall have their part in the lake which burneth with fire and brimstone."
A lake of molten brimstone means that its 
temperature must be at or below the boiling point [of 
Sulphur], 444.6°C.

We have, then, that Heaven, at 525°C is hotter than Hell at 
445°C.

                -- From "Applied Optics" vol. 11, A14, 1972