A solar eclipse is an unusual natural occurrence. Muslims used the phenomenon of a as season for prayer, which was only carried out during from early in until end. Although there no statistically significant difference estimating eclipse, seasons change, becomes increasingly important. Lots alternatives can be reference determination eclipse. Among commonly calculation spherical astronomy. Desp...

This paper studies the three-dimensional (3-D) ionospheric electron density variation over continental US and adjacent regions during August 2017 Great American Solar Eclipse event, using Millstone Hill incoherent scatter radar observations, ionosonde data, Swarm satellite measurements, a new TEC-based data assimilation system (TIDAS). The TIDAS can reconstruct 3-D distribution regions, with sp...

Exploitation of mega event, such as solar eclipse event, in tourism is not a new phenomenon. Many places have been exploited to attract tourists to look at natural events. By using 105 data with random sampling method, this study aims to prove that the total solar eclipse as a mega tourism event is able to provide a positive value to the value of consumer travel. The results show that there are...

Using 180 degrees field-of-view (full-sky) imaging polarimetry, we measured the spatiotemporal change of the polarization of skylight during the total solar eclipse on 29 March 2006 in Turkey. We present our observations here on the temporal variation of the celestial patterns of the degree p and angle alpha of linear polarization of the eclipsed sky measured in the red (650 nm), green (550 nm)...

BACKGROUND Calcification of thoracic aorta is very common in old people, especially ones with hypertension. This can sometime be visible on plain chest radiograph. CASE PRESENTATION We present a case of a male patient who had extensive deposition of calcium in the thoracic aorta. CONCLUSION The relationship between aortic calcification and coronary atherosclerosis remains contentious. Compu...

The possibility of visual damage after direct observation of the sun has been known since ancient times and the clinical features of solar retinopathy have been well described (DukeElder, I954). Eclipse watching is the commonest cause of solar retinopathy, but this form of eye injury has also been described in flying personnel, gunners and air observers (Flynn, 1952), as a result of religious r...